WO2024113659A1

WO2024113659A1 - High-moisture-content high-viscosity soil material blending system and process

Info

Publication number: WO2024113659A1
Application number: PCT/CN2023/090256
Authority: WO
Inventors: 赵云飞; 李秋石; 熊亮; 王文学; 江万红; 车维斌; 谭小军
Original assignee: 中国水利水电第五工程局有限公司
Priority date: 2022-11-30
Filing date: 2023-04-24
Publication date: 2024-06-06
Also published as: CN115816660A

Abstract

The present invention relates to the technical field of graded ingredient blending. Disclosed are a high-moisture-content high-viscosity soil material blending system and process. The system comprises a hopper set, a feeding conveyor, a stabilized soil mixer, and a discharging conveyor. The hopper set is configured to combine and discharge corresponding raw materials. The feeding conveyor is configured to feed and convey the combined and discharged soil material. The stabilized soil mixer is configured to blend and output the soil material conveyed by the feeding conveyor, the stabilized soil mixer and the feeding conveyor are provided with a water supplementing assembly, and the water supplementing assembly is configured to supplement water to the soil material conveyed by the feeding conveyor. The discharging conveyor is configured to transfer and output the blended and outputted soil material. The process is implemented by utilizing the system. According to the blending system, a mixing paddle assembly and a conveying auger assembly in the mixer are clutchedly connected, so that a pure mixing mode or a conveying-and-mixing mode can be selected, an online field production process of the high-moisture-content high-viscosity soil material can be better satisfied, and the automation degree and the production efficiency are higher.

Description

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

Technical Field

The 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 technique

At present, in the production process of concrete materials for field projects, most of them are directly batched, mixed and output on site, with a high degree of automation, and the whole process belongs to assembly line operation. However, when producing high-water content and high-viscosity soil materials, the soil materials produced by the entire assembly line operation are difficult to meet the use requirements, especially the mixing uniformity is not high. The usual solution is to return the mixed soil materials that do not meet the requirements after mixing to the mixing equipment for mixing, and repeat this cycle until the final mixed soil materials meet the use requirements.

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-water content and high-viscosity soil materials, the rotation speed can only be adjusted to increase the residence time of the concrete material. However, it is difficult to meet the final demand characteristics of the mixed soil materials. It is necessary to return for mixing again, which makes the whole process relatively complicated and requires human intervention and assistance, which reduces the degree of automation and production efficiency to a certain extent.

In view of this, this application is hereby filed.

Summary of the invention

The object of the present invention is to provide a high-water content and high-viscosity soil material mixing system and process, wherein the mixing system is connected by clutching the stirring paddle assembly and the conveying auger assembly in the mixer. Therefore, it is possible to choose a pure mixing mode or a conveying and mixing mode, which can better meet the online field production process of high-water content and high-viscosity soil materials, with a higher degree of automation and production efficiency; this process is implemented using a blending system, which can more efficiently mix mixed soil materials that meet the requirements.

The embodiment of the present invention is achieved as follows:

In the first aspect, a high-water content and high-viscosity soil material mixing system includes a batching hopper group, a loading conveyor, a stabilized soil mixer and a unloading conveyor, wherein the batching hopper group is used to combine and unload corresponding raw materials; the loading conveyor is used to load and convey the combined unloaded 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, and the water replenishing component is used to replenish water for the loaded and conveyed soil; the unloading conveyor is used to transfer and output the mixed and output soil; wherein the stabilized soil mixer is provided with a mixing mechanism, the mixing mechanism includes 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, 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.

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 clutch-connected to 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 power to each other.

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 sleeved on the transmission 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 is connected to the end of the outer sleeve by a linear bearing, and the inner hole of the inner sleeve is sleeved on the transmission shaft with a gap, 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 final position. When the transmission shaft moves toward the final position, the convex ring can follow the movement and contact and transmit with the inner sleeve; when the transmission shaft moves away from the final position, the convex ring can separate from the inner sleeve.

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.

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.

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 a space to accommodate the axial movement of the transmission shaft, and the end surface of the limit plate forms a limit step for limiting the axial movement of the conveying auger at the end position.

In an optional embodiment, a controllable material gate is provided on the side wall of the stabilized soil mixer, at least one radial slideway communicated with the inner hole is opened in the limit plate, a transmission rod is slidably arranged in the radial slideway, 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 bevel action and triggers the controllable material gate to open; a reset spring is arranged in the radial slideway to reset the transmission rod after sliding.

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 arranged in the stabilized soil mixer, and the controller is connected with the telescopic cylinder signal.

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 arranged at the edge of the conveying auger at the rear 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 arranged 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.

In the second aspect, a high-water content and high-viscosity soil blending process is provided, which uses the above-mentioned high-water content and high-viscosity soil blending system, and the blending process includes the following steps: using a batching hopper group to blend two kinds of 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, when mixing, medium speed and high speed are used to run for 40 minutes to stir out the two kinds of 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 fitting error between the actual grading test result and the theoretical grading curve is less than or equal to 5%.

The beneficial effects of the embodiments of the present invention are:

The high-water content and high-viscosity soil material blending system provided by the embodiment of the present invention completes the grading and combination of raw materials by setting a batching hopper group, and transports the materials to the stabilized soil mixer by setting a feeding 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 mixed material after water replenishment can not only achieve the specified requirements of mixing and stirring in the stabilized soil mixer, but also output it from the conveying auger component after the mixing operation is completed, and finally transfer it to the output by the feeding conveyor; the whole Compared with the traditional mode of mixing and conveying at the same time, this process can better control the mixing process of the mixed soil materials, especially in the large-scale production operations of high-water content and high-viscosity soil materials. There is no need to return the materials for multiple mixing, and the production efficiency and degree of automation are higher. This process is realized by using this mixing system, which can more efficiently mix the mixed soil materials that meet the requirements.

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

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

FIG1 is a schematic structural diagram of a mixing system provided in an embodiment of the present invention;

FIG2 is a schematic structural diagram of a stabilized soil mixer provided in an embodiment of the present invention;

FIG3 is a schematic structural diagram of a stirring mechanism provided in an embodiment of the present invention;

FIG4 is an enlarged schematic diagram of point A of the stirring mechanism shown in FIG3 ;

FIG. 5 is an enlarged schematic diagram of point B of the stirring mechanism shown in FIG. 3 .

Icons: 1-batch hopper group; 2-feeding conveyor; 3-stabilized soil mixer; 4-discharge conveyor; 5-water replenishment component; 6-mixing mechanism; 7-feeding port; 8-detection port; 9-control mechanism; 10-controllable material door; 11-limiting component; 61-drive shaft; 62-mixing paddle; 63-convex conveyor 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 ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 here can be arranged and designed in various different configurations.

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 claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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 require further definition and explanation in the subsequent drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", The directions or positional relationships indicated by “right”, “vertical”, “horizontal”, “inside”, “outside”, etc. are based on the directions or positional relationships shown in the drawings, or are the directions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Example

Please refer to Figures 1 to 3. The high-water content and high-viscosity soil material blending system provided in this embodiment includes a batching hopper group 1, a loading conveyor 2, a stabilized soil mixer 3 and a unloading conveyor 4. The batching hopper group 1 is used to combine and unload the corresponding raw materials, which means that the batching hopper group 1 includes multiple batching hoppers, and the lifting equipment or shovel equipment transfers the corresponding raw materials to the corresponding single batching hopper. According to the types of raw materials contained in the mixed soil, the corresponding number of batching hoppers are started, and the discharge port of the batching hopper has an automatic weighing function, which can unload the corresponding number of raw materials. The loading conveyor 2 is used to load and convey the combined unloading soil materials, which means that the various raw materials after unloading fall onto the loading conveyor 2 for the next step of transfer and transportation.

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 replenishment component 5, and the water replenishment component 5 is used to replenish water for the soil material that is fed and transported. Specifically, the water replenishment 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 replenishment 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 the transfer site.

In order to adapt to this kind of large-scale outdoor concrete production operation, the traditional mixing mechanism can only transport while mixing, for example, using an auger with mixing blades. This form cannot meet the mixing requirements of the mixed soil material in one go. Either the material needs to be received from the discharge port and returned for secondary mixing, or the length of the mixer is lengthened or the mixing and conveying frequency is reduced. Both have the disadvantages of inconvenience in actual use or low efficiency. In order to address the above-mentioned problem, that is, the situation in which high-water content and high-viscosity soil materials are fully mixed before discharging, in this embodiment, the stabilized soil mixer 3 is provided with a mixing mechanism 6, and the mixing 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, and 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 act independently, as well as relatively close and synchronously driven, for example, a clutch is used between the two, or a separator is used to achieve the two. 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 drive each other.

Through the above technical scheme, when the transmission shaft 61 is in the initial state, the stirring paddle assembly and the conveying auger assembly are relatively separated and act independently. The stirring paddle assembly stirs under the rotation of the transmission shaft 61, and the conveying auger assembly has a relative rotation gap with the stirring paddle assembly and the transmission shaft 61. At this time, the conveying auger assembly is not driven and will not transport soil. The soil can be The stirring paddle assembly achieves full mixing. When the transmission shaft 61 is controlled to move axially, the stirring paddle assembly follows the movement and abuts against the conveying auger assembly and can be synchronously driven. At this time, the mixed soil material can be output under the synergistic effect of mixing and conveying, thereby achieving the purpose of adapting to scale and mixing in place at one time. It should be noted that the control of the transmission shaft 61 is realized by the control mechanism 9 integrated on the outer shell 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 shell 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 (the transmission shaft 61 and the coupling are splined and have space for axial displacement) through the shift bearing to achieve axial reciprocating motion.

The above-mentioned stirring mechanism 6 can realize two working modes: single stirring and stirring and conveying, so as to adapt to the large-scale stirring operation of high-water content and high-viscosity soil materials. The relative position between the stirring paddle assembly and the conveying auger assembly can be set independently on the left and right, or can be set crosswise. However, in order to further improve the stirring effect, the crosswise setting is adopted in this embodiment. Specifically, the stirring paddle assembly includes multiple groups of stirring paddles 62 integrated on the transmission shaft 61, that is, all stirring paddles 62 are integrated on the transmission shaft 61. The conveying auger assembly includes multiple groups of conveying augers 63, and adjacent stirring paddles 62 are connected to a group of conveying augers 63 by clutch, that is, all stirring paddles 62 and all conveying augers 63 are arranged in an interval manner, so as to achieve a form of full cross-over between the two, and each group of stirring paddles 62 and adjacent conveying augers 63 are connected to each other by clutch, and similarly, each group of conveying augers 63 and adjacent stirring paddles 62 are connected to each other by clutch. Thus, the transmission shaft 61 is driven to move axially, so that a single stirring paddle 62 and a single conveying augers 63 can be separated from each other or transmitted to each other. Through the above technical scheme, 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 also 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-area leakage.

More specifically, in this embodiment, all the stirring paddles 62 and the conveying augers 63 are combined to adopt a synchronous extrusion transmission method, which is conducive to closing all the stirring paddles 62 and all the conveying augers 63 in a simple and controllable manner. Please refer to Figures 4 and 5. The stirring paddle 62 includes an outer sleeve 621 and stirring blades 622 arranged 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, and the two stirring blades 622 in each group have a length difference. The stirring blades 622 at the rear along the soil material output direction are shorter than the stirring blades 622 at the front, so that the soil material is more convenient to be transported to the next group of conveying augers 63 under stirring. The inner hole of the outer sleeve 621 is formed with a convex ring 623, and the convex ring 623 is fixedly sleeved on the transmission shaft 61, that is, all the outer sleeves 621 are relatively fixed to the transmission shaft 61 through the convex ring 623, so as to achieve synchronous movement of the two.

The conveying auger 63 includes an inner sleeve 631 and an auger 632 formed on the outer wall of the inner sleeve 631. The end (such as a single end or two ends) of the inner sleeve 631 is connected to the end of the outer sleeve 621 through a linear bearing 624, so that the inner sleeve 631 and the outer sleeve 621 have a relative rotation space and a tendency to move relative axially. The inner hole of the inner sleeve 631 is sleeved on the transmission shaft 61 with a gap, that is, there is always a relative rotation space between the inner sleeve 631 and the transmission shaft 61. The entire inner sleeve 631 is connected to the outer sleeve 621 through the linear bearing 624, thereby preventing the inner sleeve 631 from moving radially. 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 pressed tightly against the end face of the convex ring 623, so that the friction between the two is large enough, and the convex ring 623 can drive the inner sleeve 631 to rotate when it rotates. A limit assembly 11 is provided in the stabilized soil mixer 3 for limiting the axial movement of the conveying auger 63 at the end position (since the discharge port is set at the tail of the stabilized soil mixer 3, the tail position is set as the conveying auger 63, which is more convenient for discharging). When the transmission shaft 61 moves toward the end position, the convex ring 623 can follow the movement and contact and transmit with the inner sleeve 631, that is, all convex rings 623 (that is, all outer The inner sleeve 621) moves axially with the transmission shaft 61. Except for the conveying auger 63 at the tail position, the other conveying auger 63 moves with the excessive displacement (that is, the inner sleeve 631 is pushed by the outer sleeve 621). Since the conveying auger 63 at the tail position is restricted and cannot move, the other conveying auger 63 and the corresponding stirring paddle 62 are squeezed and pressed against each other, thereby reaching a "closed" state. When the transmission shaft 61 moves away from the tail position, the convex ring 623 can be separated from the inner sleeve 631. At this time, the transmission shaft 61 can only drive the outer sleeve 621 to rotate. Although the inner sleeve 631 may have a tendency to rotate when it is not completely separated or in the case of inertial transmission, the greater resistance of the soil material limits the rotation of the conveying auger 63, reaching a "closed" state, so that only the stirring function can be performed.

In order to mitigate the rigid collision between the convex ring 623 and the inner sleeve 631, that is, when the transmission shaft 61 moves, the collision between all the convex rings 623 and the inner sleeve 631 is more moderate, a buffer spring 625 is fixed to the end face of the convex ring 623, and 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, the collision buffer between the convex ring 623 and the inner sleeve 631 is achieved, and it is also convenient for all the convex rings 623 to separate more fully and easily from the inner sleeve 631 when entering the "off" state. However, in order to make the transmission between the two tighter, multiple groups of buffer springs 625 can be set, and the ends of each group of buffer springs 625 after extreme compression can form a pressing effect of an effective area with the end face of the inner sleeve 631, thereby ensuring the smooth progress of the "on" state. In this embodiment, in order to further ensure the full contact effect in the "closed" state, the convex ring 623 is provided with a through hole penetrating the end faces on both sides thereof, and a support rod 626 (the support rod 626 can be a rigid rod or an elastic rod) is slidably arranged in the through hole, and friction plates 627 are fixed at both ends of the support rod 626, and the friction plates 627 are used to form a friction effect with the end face of the inner sleeve 631. When all the convex rings 623 move, the friction plates 627 first contact the end faces of the convex rings 623, and the support rods 626 move a certain distance after being subjected to force, and then transmit the force to the next group of convex rings 623, so that all the convex rings 623 and all the inner sleeves 631 are pressed and connected to each other, and in this state, there is a large friction pressure between the friction plates 627 and the convex rings 623, and the effect is more sufficient.

In this embodiment, in order to achieve more stable movement of the transmission shaft 61, the limiting assembly 11 includes a limiting plate 111 with an inner hole 113. The inner hole 113 of the limiting plate 111 is rotatably mounted on the end of the transmission shaft 61 through a linear bearing 633, thereby limiting the radial movement of the transmission shaft 61. The inner hole 113 of the limiting plate 111 has a 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 place. 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, an inner sleeve 631 for limiting the conveying auger 63 at the end position, so that the entire conveying auger 63 cannot move axially backward. In a specific example, the rear end of the inner sleeve 631 is rounded to reduce the friction between the limiting step 112 and the conveying auger 63 at the end position, so that the movement of the conveying auger 63 at the end position is smoother.

After the soil material is mixed, it is necessary to discharge the material from the discharge port of the stabilized soil mixer 3, but 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, so as to avoid opening the discharge port too early to unload non-compliant soil materials or opening the discharge port 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 slideway 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 slideway 114, and 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 the function of relative displacement under the action of the inclined surface cutting. The other end of the transmission rod 115 forms a trigger with the controllable material door 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 door 10 to open, so that the discharge port can be opened for unloading when the conveying auger 63 starts to move. It should be noted that a reset spring 116 is provided in the radial slide 114 to reset the transmission rod 115 after sliding, so as to ensure that after the transmission shaft 61 is reset, the transmission rod 115 can also be reset, which adapts to the characteristics of cyclic operation.

In order to make the discharge port discharge relatively fully, in the present 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, which can match the semi-circular shape of the bottom of the stabilized soil mixer 3, and the upper end of the controllable material door 10 is connected to the side wall of the stabilized soil mixer 3 by a hinge, and the side wall of the stabilized soil mixer 3 is provided with a telescopic cylinder hinged to 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 to open 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 are triggered by the controllable material door 10 to open. Among them, the triggering method can be a pure 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 thus open the controllable material door 10.

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 process of offline material collection 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 table 634 is provided at the edge of the conveying auger 63 at the end position, and this edge refers to the outer edge of the conveying auger 63. The feeding table 634 can approach the detection port 8 when moving, that is, the movement trajectory of the feeding table 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 scheme can prevent the soil material taken out from not meeting the standards during 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 to achieve the purpose of reducing the noise of soil acquisition.

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 transmission-connected to the end of the transmission rod 115 (at the trigger head 117). It mainly refers to the lever-type connecting rods that are hinged to each other. 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 baffle plates at the ends of the transmission rod 115 can also be driven by gear racks or screw rods and nuts, which will not be elaborated here. Through the above technical solution, not only online material collection is realized, but also the soil taken out is basically mixed in place, thereby ensuring the accuracy of the detection object.

This embodiment also provides a high-water content and high-viscosity soil blending process, which is implemented by the high-water content and high-viscosity soil blending system mentioned above. The blending process includes the following steps: using a batching hopper group 1 to blend two raw materials, then conveying the blended soil to a stabilized soil mixer 3 through a feeding conveyor 2 for mixing, and finally outputting the mixed soil through a feeding conveyor 4, and water is replenished by a water replenishing component 5 during this process. Among them, when mixing, two raw materials are respectively stirred out by running at medium speed and high speed for 40 minutes, and several groups of each are taken for testing. 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%. Through the above technical scheme, the mixing operation of the two raw materials can be produced more accurately, especially for high-water content and high-viscosity soil, the mixing process can be independently operated, and the output is not carried out until the mixing is in place, so as to facilitate large-scale operation.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope 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 the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention.

Claims

A high-water content and high-viscosity soil material mixing system, characterized by comprising:

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 unloaded soil;

A stabilized soil mixer, the stabilized soil mixer is used to mix and output the soil material that is fed and transported, and the stabilized soil mixer and the feeding conveyor are provided with a water replenishment component, the water replenishment component is used to replenish water to the soil material that is fed and transported;

A material discharge conveyor, which is used to transfer and discharge the mixed soil material;

Among them, the stabilized soil mixer is provided with a stirring mechanism, which includes 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 to drive the transmission shaft to move axially, so that the stirring paddle assembly and the conveying auger assembly can be separated from each other or transmit to each other.
The high-moisture content and high-viscosity soil mixing system according to claim 1 is characterized in that the agitator assembly includes multiple groups of agitators integrated on the transmission shaft, and the conveying auger assembly includes multiple groups of conveying augers, and one group of the conveying augers is clutch-connected between adjacent agitators to drive the transmission shaft to move axially, so that the agitator and the conveying auger can be separated from each other or transmitted to each other.
The high-water content and high-viscosity soil material mixing system according to claim 2 is characterized in that 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 sleeved on the transmission shaft, and 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 is connected to the end of the outer sleeve by a linear bearing, and the inner hole of the inner sleeve has a clearance to be sleeved On the transmission shaft, a clutch connection is formed between the end surface of the inner sleeve and the end surface of the convex ring;

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 with the inner sleeve; when the transmission shaft moves away from the end position, the convex ring can separate from the inner sleeve.
The high-moisture content and high-viscosity soil material mixing system according to claim 3 is characterized in that a buffer spring is fixed to the end face of the convex ring, and the buffer spring is used to form a contact buffer with the end face of the inner sleeve.
The high-moisture content and high-viscosity soil mixing system according to claim 3 or 4 is characterized in that a through hole penetrating the end faces on both sides of the convex ring is opened, a support rod is slidably arranged in the through hole, 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 high-moisture content and high-viscosity soil mixing system according to claim 3 is characterized in that 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 surface of the limit plate forms a limit step for limiting the axial movement of the conveying auger at the end position.
The high-water content and high-viscosity soil material mixing system according to claim 6 is characterized in that a controllable material door is provided on the side wall of the stabilized soil mixer, at least one radial slideway communicating with the inner hole is provided in the limit plate, a transmission rod is slidably provided in the radial slideway, 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 door, and when the transmission shaft moves toward the end position, the transmission shaft The end drives the transmission rod to slide and triggers the controllable material door to open through the bevel cutting effect; a return spring is arranged in the radial slideway to return the transmission rod to its original position after sliding.
The high-moisture content and high-viscosity soil mixing system according to claim 7 is characterized in that 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, and the stabilized soil mixer is provided with a controller for sensing the trigger signal, and the controller is connected to the telescopic cylinder signal.
The high-water content and high-viscosity soil material mixing system according to claim 7 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 end position, and the feeding platform can approach the detection port when moving, so that the soil material passes through the detection port under the action of inertia;

A rotatable material baffle plate is provided at the detection port, and one side of the material baffle plate is transmission-connected to the end of the transmission rod. When the transmission rod slides along the radial slideway and triggers the controllable material door, it can drive the material baffle plate to rotate and open the detection port. When the transmission rod is reset, it can drive the material baffle plate to rotate and close the detection port.
A high-water content and high-viscosity soil material blending process, characterized in that the high-water content and high-viscosity soil material blending system according to any one of claims 1 to 9 is used, and the blending process comprises the following steps: using a batching hopper group to blend two raw materials, then conveying the blended soil material to a stabilized soil mixer through a feeding conveyor for mixing, and finally outputting the mixed soil material through a discharging conveyor;

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 kind 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 grading test result and the theoretical grading curve fitting is less than or equal to 5%.