A high-water-content and high-viscosity soil material mixing system and process

Abstract

The present invention discloses a high-water content and high-viscosity soil material blending system and process, which relates to the field of graded material blending technology. The system includes a batching hopper group, a loading conveyor, a stabilized soil mixer and a discharge conveyor. The batching hopper group is used to combine and discharge corresponding raw materials; the loading conveyor is used to load and convey the combined and discharged soil material; the stabilized soil mixer is used to mix and output the loaded and conveyed soil material, and the stabilized soil mixer and the loading conveyor are provided with a water replenishing component, which is used to replenish water for the loaded and conveyed soil material; the discharge conveyor is used to transfer and output the mixed and output soil material; the process is implemented using the above system. The blending system can select a pure mixing mode or a conveying and mixing mode by clutching the stirring paddle component and the conveying auger component in the mixer, which can better meet the online field production process of high-water content and high-viscosity soil materials, and has a higher degree of automation and production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of graded material blending, and in particular to a high-water-content and high-viscosity soil material blending system and process. Background Art

[0002] Currently, concrete production processes for field projects mostly involve direct on-site batching, mixing, and delivery, with a high degree of automation, making the entire process a streamlined operation. However, when producing high-moisture, high-viscosity soil, the resulting material from this assembly line process can struggle to meet application requirements, especially due to poor mixing uniformity. A common solution is to return any unsatisfactory mixed material to the mixing equipment for further mixing, repeating this cycle until the final mix meets application requirements.

[0003] In the above solutions, due to the specifications and functions of the mixing equipment, it has the characteristics of mixing and conveying at the same time. For the mixing process of high-moisture and high-viscosity soil materials, the only way is to increase the residence time of the concrete material by adjusting the rotation speed. However, this makes it difficult to meet the final required characteristics of the mixed soil materials. It is necessary to return to mix again, which makes the whole process relatively complicated and requires human intervention and assistance, thereby reducing the degree of automation and production efficiency to a certain extent.

[0004] In view of this, this application is hereby filed. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-moisture-content and high-viscosity soil mixing system and process. The mixing system connects the stirring paddle assembly and the conveying auger assembly in the mixer by clutch, so that a pure stirring mode or a conveying and stirring mode can be selected, which can better meet the online field production process of high-moisture-content and high-viscosity soil, and has a higher degree of automation and production efficiency. The process is implemented using the mixing system, and can more efficiently mix mixed soil materials that meet the requirements.

[0006] The embodiment of the present invention is achieved as follows:

[0007] The first aspect is a high-moisture-content and high-viscosity soil mixing system, comprising a batching hopper group, a loading conveyor, a stabilized soil mixer and a discharge conveyor, wherein the batching hopper group is used to combine and discharge corresponding raw materials; the loading conveyor is used to load and convey the combined and discharged soil; the stabilized soil mixer is used to mix and output the loaded and conveyed soil, and the stabilized soil mixer and the loading conveyor are provided with a water replenishing component, which is used to replenish water for the loaded and conveyed soil; the discharge conveyor is used to transfer and output the mixed and output soil; wherein the stabilized soil mixer is provided with a stirring mechanism, which comprises an axially movable transmission shaft and a stirring paddle assembly and a conveying auger assembly integrated on the transmission shaft, the stirring paddle assembly and the conveying auger assembly are clutch-connected, driving the transmission shaft to move axially, so that the stirring paddle assembly and the conveying auger assembly can be separated from each other or transmitted to each other.

[0008] In an optional embodiment, the agitator assembly includes multiple groups of agitators integrated on the drive shaft, and the conveying auger assembly includes multiple groups of conveying augers. Adjacent agitators are clutched to connect one group of conveying augers, driving the drive shaft to move axially, so that the agitator and the conveying auger can be separated from each other or transmit to each other.

[0009] In an optional embodiment, the stirring paddle includes an outer sleeve and a stirring blade arranged on the outer sleeve, the inner hole of the outer sleeve is formed with a convex ring, and the convex ring is fixedly mounted on the drive shaft, the conveying auger includes an inner sleeve and an auger formed on the outer wall of the inner sleeve, the end of the inner sleeve and the end of the outer sleeve are connected by a linear bearing, and the inner hole of the inner sleeve is mounted on the drive shaft with a gap, and a clutch connection is formed between the end face of the inner sleeve and the end face of the convex ring; a limit assembly is provided in the stabilized soil mixer for limiting the axial movement of the conveying auger at the end position, when the drive shaft moves toward the end position, the convex ring can follow the movement and contact and transmit with the inner sleeve; when the drive shaft moves away from the end position, the convex ring can separate from the inner sleeve.

[0010] In an optional embodiment, a buffer spring is fixed to the end surface of the convex ring, and the buffer spring is used to form a contact buffer with the end surface of the inner sleeve.

[0011] In an optional embodiment, a through hole is opened in the convex ring and passes through the end faces on both sides thereof, a support rod is slidably arranged in the through hole, and friction plates are fixed at both ends of the support rod, and the friction plates are used to form friction with the end face of the inner sleeve.

[0012] In an optional embodiment, the limit assembly includes a limit plate having an inner hole, the inner hole of the limit plate is rotatably mounted on the end of the transmission shaft through a linear bearing, the inner hole of the limit plate has space to accommodate the axial movement of the transmission shaft, and the end face of the limit plate forms a limit step for limiting the axial movement of the conveying auger at the end position.

[0013] In an optional embodiment, a controllable material gate is provided on the side wall of the stabilized soil mixer, and at least one radial slide communicating with the inner hole is provided in the limit plate, and a transmission rod is slidingly provided in the radial slide, one end of the transmission rod forms an oblique fit with the end of the transmission shaft, and the other end of the transmission rod forms a trigger with the controllable material gate. When the transmission shaft moves toward the end position, the end of the transmission shaft drives the transmission rod to slide through the oblique action and triggers the controllable material gate to open; a reset spring is provided in the radial slide to reset the transmission rod after sliding.

[0014] In an optional embodiment, the top side of the controllable material door is hinged to the side wall of the stabilized soil mixer by a hinge, and the side wall of the stabilized soil mixer is provided with a telescopic cylinder hinged to one side of the controllable material door. A controller for sensing a trigger signal is provided in the stabilized soil mixer, and the controller is connected to the telescopic cylinder signal.

[0015] In an optional embodiment, a detection port is formed on the side wall of the stabilized soil mixer near the controllable material gate, and a feeding platform is provided at the edge of the conveying auger at the end position. The feeding platform can approach the detection port when it moves so that the soil material passes through the detection port under the action of inertia; a rotatable baffle plate is provided at the detection port, and one side of the baffle plate is connected to the end of the transmission rod. When the transmission rod slides along the radial slide and triggers the controllable material gate, it can drive the baffle plate to rotate and open the detection port. When the transmission rod is reset, it drives the baffle plate to rotate and close the detection port.

[0016] Secondly, a high-moisture-content, high-viscosity soil blending process uses the above-mentioned high-moisture-content, high-viscosity soil blending system, and the blending process includes the following steps: using a batching hopper group to blend two raw materials, and then conveying the blended soil to a stabilized soil mixer through a loading conveyor for mixing, and finally outputting the mixed soil through a discharging conveyor; wherein, during the mixing, medium speed and high speed are used to run for 40 minutes to stir out the two raw materials respectively, and several groups of each are taken for testing, and the soil that meets the test requirements is mixed with gravel, and the mixing is continued until the actual gradation test result and the fitting error of the theoretical gradation curve are less than or equal to 5%.

[0017] The beneficial effects of the embodiments of the present invention are:

[0018] The high-water content and high-viscosity soil material mixing system provided by the embodiment of the present invention completes the grading and combination of raw materials by setting a batching hopper group, and loads and transports the raw materials to the stabilized soil mixer by setting a loading conveyor. The stabilized soil mixer can not only adopt a mode in which only the stirring paddle component works, but also adopt a mode in which the stirring paddle component and the conveying auger component work together, so that the water-replenished mixture can not only achieve the specified mixing and stirring requirements in the stabilized soil mixer, but also output it again through the conveying auger component after the mixing operation is completed, and finally transfer it and output it by the unloading conveyor; the whole process can better control the mixing process of the mixed soil material compared with the traditional mode of stirring and transporting at the same time, especially in the large-scale production operation of high-water content and high-viscosity soil materials, there is no need to return the material for multiple mixing, and the production efficiency and degree of automation are higher; the process is implemented by the mixing system, and can more efficiently mix the mixed soil material that meets the requirements.

[0019] In general, the high-moisture-content and high-viscosity soil mixing system and process provided by the embodiments of the present invention adapt to the characteristics of large-scale production, and improve and adjust the working mode of the stabilized soil mixer to adapt to the mixing process of high-moisture-content and high-viscosity soil, so as to have higher production efficiency and degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a mixing system provided in an embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a stabilized soil mixer provided in an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a stirring mechanism provided in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of point A of the stirring mechanism shown;

[0025] Figure 5 for Figure 3 An enlarged schematic diagram of point B of the stirring mechanism is shown.

[0026] Icons: 1-Batch hopper group; 2-Loading conveyor; 3-Stabilized soil mixer; 4-Unloading conveyor; 5-Water supply assembly; 6-Mixing mechanism; 7-Feeding port; 8-Detection port; 9-Control mechanism; 10-Controllable material door; 11-Limiting assembly; 61-Drive shaft; 62-Mixing paddle; 63-Conveying auger; 111-Limiting plate; 112-Limiting step; 113-Inner hole; 114-Radial slide; 115-Drive rod; 116-Reset spring; 117-Trigger head; 621-Outer sleeve; 622-Mixing blade; 623-Convex ring; 624-Linear bearing; 625-Buffer spring; 626-Support rod; 627-Friction plate; 631-Inner sleeve; 632-Auger; 633-Linear bearing; 634-Feeding table. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0031] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] Example

[0034] See also Figures 1 to 3 The present embodiment provides a high-moisture-content, high-viscosity soil material blending system comprising a batching hopper group 1, a loading conveyor 2, a stabilized soil mixer 3, and a discharge conveyor 4. The batching hopper group 1 is used to discharge corresponding raw materials in a combined manner, i.e., the batching hopper group 1 includes multiple batching hoppers. Lifting equipment or shovel equipment transfers the corresponding raw materials to corresponding individual batching hoppers. A corresponding number of batching hoppers are activated according to the types of raw materials contained in the mixed soil material. The batching hopper discharge port has an automatic weighing function, which can discharge the corresponding amount of raw materials. The loading conveyor 2 is used to load and convey the combined soil material, i.e., the various raw materials after discharge fall onto the loading conveyor 2 for the next step of transfer and transportation.

[0035] The stabilized soil mixer 3 is used to mix and output the soil material that is fed and transported, and the stabilized soil mixer 3 and the feeding conveyor 2 are provided with a water supply component 5, and the water supply component 5 is used to replenish water to the soil material that is fed and transported. Specifically, the water supply component 5 is fixed at the end of the feeding conveyor 2 and is located above the feeding port 7 of the stabilized soil mixer 3. The water supply component 5 has a water inlet pipe, and a control valve is installed on the water inlet pipe, and a spray nozzle is provided at the mouth of the water inlet pipe. The spray nozzle is fixed on the frame at the end of the feeding conveyor 2, and can continuously spray water mist on the combined soil material that falls to the feeding port 7 to meet the production requirements of the moisture content ratio. After the soil material is mixed in the stabilized soil mixer 3, it is output to the unloading conveyor 4 through the discharge port of the stabilized soil mixer 3. The unloading conveyor 4 is used to transfer and output the mixed and output soil material to the use site or transfer site.

[0036] In order to adapt to this large-scale field concrete production operation, the traditional mixing mechanism can only mix and convey at the same time, for example, using an auger with stirring blades. This form cannot meet the mixing requirements of the mixed soil material in one go. Either the material needs to be collected from the discharge port and returned for secondary mixing, or the length of the mixer needs to be lengthened or the mixing and conveying frequency needs to be reduced. Both of these have the disadvantages of being inconvenient or inefficient in actual use. In order to address the above-mentioned problem, that is, the situation where high-water content and high-viscosity soil materials are fully stirred before being discharged, in this embodiment, the stabilized soil mixer 3 is provided with a stirring mechanism 6, and the stirring mechanism 6 includes an axially movable transmission shaft 61 and a stirring paddle assembly and a conveying auger assembly integrated on the transmission shaft 61. The stirring paddle assembly and the conveying auger assembly are clutch-connected. The clutch connection here means that the stirring paddle assembly and the conveying auger assembly can be relatively separated and independently moved, as well as relatively close and synchronously transmitted. For example, a clutch is used between the two, or a separator is used to achieve it. The two only need to be separated or connected under the action of an action mechanism, that is, the driving transmission shaft 61 in this embodiment moves axially, which can separate the stirring paddle assembly and the conveying auger assembly from each other or transmit to each other.

[0037] Through the above technical solution, when the transmission shaft 61 is in the initial state, the stirring paddle assembly and the conveying auger assembly are relatively separated and operate independently. The stirring paddle assembly stirs under the rotation of the transmission shaft 61, and the conveying auger assembly has a gap between the stirring paddle assembly and the transmission shaft 61 to allow relative rotation. At this time, the conveying auger assembly is not driving and will not transport soil materials, so the soil materials can be fully mixed by the stirring paddle assembly. When the transmission shaft 61 is controlled to move axially, the stirring paddle assembly moves with it and abuts against the conveying auger assembly, and can be driven synchronously. At this time, the mixed soil materials can be output under the synergistic effect of stirring and conveying, thereby achieving the purpose of adapting to scale and mixing in one go. It should be noted that the control of the transmission shaft 61 is realized through the control mechanism 9 integrated on the outer casing of the stabilized soil mixer 3. The control mechanism 9 includes a linear drive and a shift lever integrated on the action end of the linear drive. The other end of the shift lever is fixedly connected to the shift bearing sleeved on the transmission shaft 61. The linear drive integrated on the outer casing of the stabilized soil mixer 3 is controlled by program or manually. The linear drive drives the shift lever to perform reciprocating linear motion, thereby driving the transmission shaft 61 through the shift bearing (the transmission shaft 61 and the coupling are connected by a spline, which can have space for axial displacement) to realize axial reciprocating motion.

[0038] The stirring mechanism 6 described above can achieve two operating modes: independent stirring and stirring and conveying, thus accommodating large-scale stirring operations for high-moisture, high-viscosity soil materials. The relative positioning of the stirring paddle assembly and the conveying auger assembly can be independent or interdigitated. However, to further enhance the stirring effect, an interdigitated arrangement is employed in this embodiment. Specifically, the stirring paddle assembly includes multiple groups of stirring paddles 62 integrated onto the drive shaft 61, i.e., all stirring paddles 62 are integrated onto the drive shaft 61. The conveying auger assembly includes multiple groups of conveying augers 63, with adjacent stirring paddles 62 being clutched and connected to a group of conveying augers 63. i.e., all stirring paddles 62 and all conveying augers 63 are spaced apart to achieve a fully interdigitated arrangement. Each group of stirring paddles 62 is clutched and connected to an adjacent conveying augers 63, and similarly, each group of conveying augers 63 is clutched and connected to an adjacent stirring paddle 62. This drives the drive shaft 61 axially, enabling individual stirring paddles 62 and conveying augers 63 to separate or transmit power to each other. Through the above technical solution, not only can the mixing range be large enough and cover the inner cavity of the stabilized soil mixer 3, so that the soil material inside can be fully mixed in space, but the distribution space of the conveying auger 63 is also large enough, the conveying range is sufficient, and it is arranged adjacent to each group of stirring paddles 62. When it is necessary to convey the material out, the soil material at the stirring paddle 62 can be conveyed in time, thereby avoiding the problem of insufficient conveying due to large-scale leakage of material.

[0039] More specifically, in this embodiment, all the stirring blades 62 and the conveying screw 63 are combined to adopt a synchronous extrusion transmission method, which is conducive to using a simple and controllable method to close all the stirring blades 62 and all the conveying screw 63. Figure 4 and Figure 5 The stirring paddle 62 includes an outer sleeve 621 and stirring blades 622 disposed on the outer sleeve 621. The stirring blades 622 are arranged in multiple groups along the circumference of the outer sleeve 621. Each group includes two stirring blades 622. The two stirring blades 622 in each group have different lengths. The stirring blades 622 located at the rear of the soil material output direction are shorter than the stirring blades 622 located at the front. This facilitates the conveying of the soil material to the next group of conveying auger 63 under the stirring action. The inner hole of the outer sleeve 621 is formed with a convex ring 623, which is fixedly mounted on the transmission shaft 61. That is, all outer sleeves 621 are fixed relative to the transmission shaft 61 through the convex ring 623, thereby achieving synchronous movement of the two.

[0040] The conveying auger 63 includes an inner sleeve 631 and an auger 632 formed on the outer wall of the inner sleeve 631. The ends of the inner sleeve 631 (e.g., a single end or both ends) are connected to the ends of the outer sleeve 621 via linear bearings 624, allowing for relative rotational space between the inner sleeve 631 and the outer sleeve 621 while also allowing for relative axial movement. The inner bore of the inner sleeve 631 fits over the transmission shaft 61 with clearance, ensuring constant relative rotational space between the inner sleeve 631 and the transmission shaft 61. The entire inner sleeve 631 is connected to the outer sleeve 621 via linear bearings 624, preventing radial movement of the inner sleeve 631. A clutch connection is formed between the end face of the inner sleeve 631 and the end face of the convex ring 623. "Clutch" means that the end face of the inner sleeve 631 and the end face of the convex ring 623 are not in contact with each other or just in contact, and there is a relatively independent movement restriction between the two, so that the convex ring 623 does not drive the inner sleeve 631 to rotate when it rotates; "clutch" means that the end face of the inner sleeve 631 is tightly pressed against the end face of the convex ring 623, so that the friction between the two is large enough that the convex ring 623 can drive the inner sleeve 631 to rotate when it rotates. The stabilized soil mixer 3 is provided with a limit assembly 11 for limiting the axial movement of the conveying auger 63 at the end position (because the discharge port is provided at the tail of the stabilized soil mixer 3, the tail position is provided as the conveying auger 63 for more convenient discharge). When the drive shaft 61 moves toward the rear end, the convex ring 623 is able to follow the movement and contact and drive with the inner sleeve 631. That is, all convex rings 623 (that is, all outer sleeves 621) follow the axial movement of the drive shaft 61. Except for the conveying auger 63 at the rear end, the remaining conveying augers 63 follow the movement under excessive displacement (that is, the inner sleeve 631 is pushed by the outer sleeve 621). Because the conveying auger 63 at the rear end is restricted and cannot move, the remaining conveying augers 63 and the corresponding stirring paddles 62 are squeezed and pressed together, thus reaching a "closed" state. When the drive shaft 61 moves away from the rear end, the convex ring 623 is able to separate from the inner sleeve 631. At this time, the drive shaft 61 can only drive the outer sleeve 621 to rotate. Although the inner sleeve 631 may have a tendency to rotate if it is not completely disengaged or due to inertial transmission, the greater resistance of the soil restricts the rotation of the conveying augers 63, reaching a "disengaged" state, so that only the stirring function can be performed.

[0041] To mitigate the rigid collision between the convex ring 623 and the inner sleeve 631, that is, to mitigate the collision between all convex rings 623 and the inner sleeve 631 when the transmission shaft 61 is in motion, a buffer spring 625 is fixed to the end face of the convex ring 623. The buffer spring 625 is used to form a contact buffer with the end face of the inner sleeve 631. Through the above technical solution, collision buffering between the convex ring 623 and the inner sleeve 631 is achieved, and it is also convenient for all convex rings 623 to separate from the inner sleeve 631 more fully and easily when entering the "off" state. However, to ensure a tighter transmission between the two, multiple groups of buffer springs 625 can be provided. The ends of each group of buffer springs 625, after extreme compression, can form a pressing effect with the end face of the inner sleeve 631 with an effective area, thereby ensuring the smooth "on" state. In this embodiment, to further ensure sufficient contact in the "closed" state, through-holes are provided in the convex ring 623, extending through its two end surfaces. Support rods 626 (which may be rigid or elastic) are slidably disposed within the through-holes. Friction plates 627 are fixed to both ends of the support rods 626. The friction plates 627 are used to create friction with the end surfaces of the inner sleeves 631. When all convex rings 623 move, the friction plates 627 first contact the end surfaces of the convex rings 623. After receiving the force, the support rods 626 move a certain distance and then transmit the force to the next set of convex rings 623. This achieves a mutually compressed connection between all convex rings 623 and all inner sleeves 631. In this state, there is a greater frictional pressure between the friction plates 627 and the convex rings 623, ensuring a more effective contact.

[0042] In this embodiment, to achieve more stable movement of the transmission shaft 61, the limiting assembly 11 includes a limiting plate 111 having an inner hole 113. The inner hole 113 of the limiting plate 111 is rotatably mounted on the end of the transmission shaft 61 via a linear bearing 633, thereby limiting the radial movement of the transmission shaft 61. The inner hole 113 of the limiting plate 111 has space to accommodate the axial movement of the transmission shaft 61, that is, the axial depth of the inner hole 113 allows the transmission shaft 61 to axially reciprocate in position. The end surface of the limiting plate 111 forms a limiting step 112 for limiting the axial movement of the conveying auger 63 at the end position. Specifically, the limiting step 112 is formed on the end surface of the limiting plate 111 for limiting the axial movement of the conveying auger 63 at the end position, thereby preventing the entire conveying auger 63 from moving axially backward. In a specific embodiment, the rear end of the inner sleeve 631 is rounded to reduce friction between the inner sleeve 631 and the limiting step 112, thereby ensuring smoother movement of the conveying auger 63 at the end position.

[0043] After the soil material is mixed, it is necessary to discharge the material from the discharge port of the stabilized soil mixer 3. However, the discharge port is opened manually or automatically. In order to improve the degree of automation, the discharge port can be opened when the conveying auger 63 starts to move, thereby avoiding the situation where the discharge port is opened too early to unload non-compliant soil materials or opened too late to cause the discharge port to be easily blocked. In some embodiments, a controllable material door 10 is provided on the side wall of the stabilized soil mixer 3, and the controllable material door 10 is connected to the discharge port in a hinged manner. At least one radial slide 114 communicating with the inner hole 113 is provided in the limit plate 111, and a transmission rod 115 is slidably provided in the radial slide 114. One end of the transmission rod 115 forms an oblique fit with the end of the transmission shaft 61. The oblique fit here means that the end of the transmission shaft 61 has an inclined surface or a conical surface, which can fit with the inclined surface or conical surface of the transmission rod 115, so that the two can achieve relative displacement under the action of the inclined surface fit. The other end of the transmission rod 115 triggers the controllable material gate 10. When the transmission shaft 61 moves toward the end position, the end of the transmission shaft 61 drives the transmission rod 115 to slide outward through the bevel effect and triggers the controllable material gate 10 to open, thereby achieving the discharge port being opened for unloading when the conveying auger 63 begins to move. It should be noted that a return spring 116 is provided in the radial slide 114 to reset the transmission rod 115 after sliding, thereby ensuring that after the transmission shaft 61 is reset, the transmission rod 115 can also be reset, adapting to the characteristics of cyclic operation.

[0044] In order to ensure that the discharge port discharges relatively fully, in this embodiment, there are two groups of controllable material doors 10. Each group of controllable material doors 10 is in the form of an arc plate that can match the semi-circular shape of the bottom of the stabilized soil mixer 3. The upper end of the controllable material door 10 is connected to the side wall of the stabilized soil mixer 3 by a hinge. The side wall of the stabilized soil mixer 3 is provided with a telescopic cylinder that is mutually hinged with the middle side or upper side of the controllable material door 10. Controlling the movement of the telescopic cylinder can make the controllable material door 10 open relative to the discharge port, thereby opening the discharge port. The controllable material doors 10 on both sides act synchronously, that is, the radial slide 114 consists of two groups, so that the two transmission rods 115 act synchronously under the action of the transmission shaft 61 and trigger the controllable material door 10 to open. Among them, the triggering method can be a purely mechanical trigger or a signal trigger. In this embodiment, a trigger head 117 is provided at the end of the transmission rod 115, and a controller for sensing the trigger signal is provided in the stabilized soil mixer 3. The signal receiving end of the controller is located on the moving path of the trigger head 117. The controller is connected to the telescopic cylinder signal. When the trigger head 117 contacts the signal receiving end, the controller controls the telescopic cylinder to move and thereby open the controllable material door 10.

[0045] In actual usage scenarios, in order to determine whether the soil mixing meets the requirements, the soil at each stage needs to be taken out and tested to determine whether it meets the standard of uniform mixing. Since the machine needs to be shut down before the mixed soil can be taken out, the offline material collection process is relatively complicated, which will affect the overall production efficiency. In order to deal with the above problems, this embodiment adopts an online material collection method to adapt to the detection work at each stage. Specifically, a detection port 8 is formed on the side wall of the stabilized soil mixer 3 near (any) controllable material door 10, and a feeding platform 634 is provided at the edge of the conveying auger 63 at the end position. This edge refers to the outer edge of the conveying auger 63. The feeding platform 634 can approach the detection port 8 when it moves, that is, the movement trajectory of the feeding platform 634 passes through the detection port 8, and the distance between the two is within 10 mm, so that the soil passes through the detection port 8 under the action of inertia, thereby facilitating the outside world to obtain the soil for detection. The above technical solution can prevent the soil material taken out from not meeting the standards during the initial mixing. When the conveying auger 63 at the end position starts to move, that is, after the material is basically mixed and discharged, the soil material is tested again, thereby achieving the purpose of reducing the noise of soil acquisition.

[0046] The detection port 8 is provided with a rotatable baffle plate (not shown) through a rotating pin, and one side of the baffle plate is connected to the end of the transmission rod 115 (at the trigger head 117). The transmission connection here mainly refers to the mutual hinged connection through the lever-type connecting rod. When the transmission rod 115 slides along the radial slide 114 and forms a trigger with the controllable material door 10, it can drive the baffle plate to rotate and open the detection port 8. When the transmission rod 115 is reset, it drives the baffle plate to rotate and close the detection port 8, thereby preventing the soil from accidentally leaking from the detection port 8 when no detection is required. Of course, in other embodiments, the transmission between the baffle plates at the end of the transmission rod 115 can also be achieved by means of gear racks or screw rods and nuts, which will not be described in detail here. Through the above technical solution, not only is online material removal achieved, but the soil taken out is soil that is basically stirred in place, thereby ensuring the accuracy of the detection object.

[0047] This embodiment also provides a high-moisture, high-viscosity soil blending process, which is implemented using the above-mentioned high-moisture, high-viscosity soil blending system. The blending process includes the following steps: using a batching hopper assembly 1 to blend two raw materials, then conveying the blended soil to a stabilized soil mixer 3 via a loading conveyor 2 for mixing, and finally outputting the mixed soil via a discharging conveyor 4. During this process, water is replenished by a water replenishment assembly 5. During the mixing process, the two raw materials are respectively stirred at a medium speed and a high speed for 40 minutes. Several groups of each type are tested, and the soil that meets the test requirements is mixed with gravel. Mixing is continued until the error between the actual gradation test result and the theoretical gradation curve fitting error is less than or equal to 5%. The above technical solution enables more precise production of the mixing operation of the two raw materials, especially for high-moisture, high-viscosity soil. The mixing process can be independently operated, and the soil is not output until the mixing is complete, thus facilitating large-scale operations.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and that descriptions of known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the present invention.

Claims

1. A high-water-content and high-viscosity soil material mixing system, characterized in that: include: A batching hopper group, which is used to combine and discharge corresponding raw materials; A loading conveyor, which is used to load and convey the combined earthen materials; A stabilized soil mixer, which is used to mix and output the soil material being fed and conveyed, and the stabilized soil mixer and the feeding conveyor are provided with a water replenishing component, which is used to replenish water to the soil material being fed and conveyed; A material discharge conveyor, which is used to transfer and discharge the mixed soil material; Wherein, the stabilized soil mixer is provided with a stirring mechanism, and the stirring mechanism includes a transmission shaft capable of axial movement and a stirring paddle assembly and a conveying auger assembly integrated on the transmission shaft. The stirring paddle assembly and the conveying auger assembly are clutch-connected, and the transmission shaft is driven to move axially, so that the stirring paddle assembly and the conveying auger assembly can be separated from each other or transmitted to each other; the stirring paddle assembly includes multiple groups of stirring paddles integrated on the transmission shaft, and the conveying auger assembly includes multiple groups of conveying augers, and adjacent stirring paddles are clutch-connected to a group of conveying augers, and the transmission shaft is driven to move axially, so that the stirring paddle and the conveying auger can be separated from each other or transmitted to each other. The transmission; the stirring paddle comprises an outer sleeve and a stirring blade arranged on the outer sleeve, the inner hole of the outer sleeve is formed with a convex ring, and the convex ring is fixedly sleeved on the transmission shaft, and the conveying auger comprises an inner sleeve and an auger formed on the outer wall of the inner sleeve, the end portion of the inner sleeve and the end portion of the outer sleeve are connected by a linear bearing, and the inner hole of the inner sleeve is sleeved on the transmission shaft with a gap, and a clutch connection is formed between the end face of the inner sleeve and the end face of the convex ring; a through hole is opened in the convex ring and passes through the end faces on both sides thereof, and a support rod is slidably arranged in the through hole, and friction plates are fixed at both ends of the support rod, and the friction plates are used to form friction with the end face of the inner sleeve; The stabilized soil mixer is provided with a limit assembly for limiting the axial movement of the conveying auger at the end position. When the transmission shaft moves toward the end position, the convex ring can follow the movement and contact and transmit the transmission to the inner sleeve; when the transmission shaft moves away from the end position, the convex ring can separate from the inner sleeve; the limit assembly includes a limit plate with an inner hole, the inner hole of the limit plate is rotatably mounted on the end of the transmission shaft through a linear bearing, the inner hole of the limit plate has a space to accommodate the axial movement of the transmission shaft, and the end face of the limit plate forms a limit step for limiting the axial movement of the conveying auger at the end position.

2. The high-moisture-content and high-viscosity soil material mixing system according to claim 1 is characterized in that: A buffer spring is fixed to the end surface of the convex ring, and the buffer spring is used to form a contact buffer with the end surface of the inner sleeve.

3. The high-moisture-content and high-viscosity soil material mixing system according to claim 1 is characterized in that: A controllable material gate is provided on the side wall of the stabilized soil mixer, and at least one radial slideway communicated with the inner hole is provided in the limit plate, and a transmission rod is slidingly provided in the radial slideway, and one end of the transmission rod forms an oblique fit with the end of the transmission shaft, and the other end of the transmission rod forms a trigger with the controllable material gate. When the transmission shaft moves toward the end position, the end of the transmission shaft drives the transmission rod to slide through the oblique action and triggers the controllable material gate to open; a reset spring is provided in the radial slideway to reset the transmission rod after sliding.

4. The high-moisture-content and high-viscosity soil material mixing system according to claim 3 is characterized in that: The top side of the controllable material door is hinged to the side wall of the stabilized soil mixer through a hinge. The side wall of the stabilized soil mixer is provided with a telescopic cylinder hinged to one side of the controllable material door. A controller for sensing the trigger signal is provided in the stabilized soil mixer, and the controller is connected to the telescopic cylinder signal.

5. The high-moisture-content and high-viscosity soil material mixing system according to claim 3 is characterized in that: A detection port is formed on the side wall of the stabilized soil mixer near the controllable material door, and a feeding platform is provided at the edge of the conveying auger at the rear end position. When the feeding platform moves, it can approach the detection port so that the soil material passes through the detection port under the action of inertia; A rotatable material baffle is provided at the detection port, and one side of the material baffle is transmission-connected to the end of the transmission rod. When the transmission rod slides along the radial slide and triggers the controllable material door, it can drive the material baffle to rotate and open the detection port. When the transmission rod is reset, it drives the material baffle to rotate and close the detection port.

6. A high-water-content and high-viscosity soil material mixing process, characterized in that: The high-water content and high-viscosity soil material blending system according to any one of claims 1 to 5 is used, wherein the blending process comprises the following steps: blending two raw materials using a batching hopper group, conveying the blended soil material to a stabilized soil mixer via a loading conveyor for mixing, and finally outputting the mixed soil material via a discharging conveyor; Among them, when mixing, medium speed and high speed are used to run for 40 minutes to stir out two kinds of raw materials respectively, and several groups of each are taken for testing. The soil and gravel that meet the test requirements are mixed together, and the mixing is continued until the error between the actual gradation test result and the theoretical gradation curve fitting is less than or equal to 5%.

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