Automatic mixing and conveying device for premixed light flow-state solidified soil

Abstract

The invention discloses an automatic mixing and conveying device for premixed light flow-state solidified soil, and relates to the technical field of preparation of flow-state solidified soil, the automatic mixing and conveying device for premixed light flow-state solidified soil comprises a mixing system, a conveying system and a control system; the mixing system comprises a mixing bin, a soil feeding module, a water inlet device, a curing agent feeding module, an additive adding module and a stirring device; the conveying system comprises a pre-storage bin and a pumping device; the mixing system is used for mixing quantitative soil, water, a curing agent and an additive to prepare light flow-state solidified soil, the light flow-state solidified soil is conveyed to the pre-storage bin, and the pumping device is used for pumping the light flow-state solidified soil in the pre-storage bin to a designated position for construction. The whole preparation process and the pumping process of the light flow state solidified soil are both achieved through a control system, accurate control over the material mixing amount and uniform mixing of a mixture can be achieved, and the preparation efficiency and the construction quality of the light flow state solidified soil are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fluidized solidified soil preparation, and in particular to an automatic mixing and conveying device for premixed light fluidized solidified soil. Background Art

[0002] In the civil engineering and construction industries, lightweight fluidized solidified soil, as a high-performance, environmentally friendly new geotechnical engineering material, has received extensive attention and application in recent years. This material is mainly composed of soil, curing agent, water and other possible additives, and is formed into a solidified soil body with high strength, low permeability and good stability through a specific mixing process. Lightweight fluidized solidified soil can not only effectively solve the problems of insufficient strength and easy deformation of traditional soil improvement materials, but also realize the resource utilization of waste, reduce environmental pollution, and conform to the concept of sustainable development.

[0003] However, in practical applications, the preparation process of lightweight fluidized solidified soil faces many challenges. Traditional mixing methods are mostly manual operations, which are not only inefficient, but also difficult to accurately control the amount of materials added, resulting in unstable quality of the mixture, affecting the subsequent construction quality and engineering safety. In addition, traditional transportation methods also have problems such as low transportation efficiency, high energy consumption, and easy blockage, which are difficult to meet the requirements of modern engineering for efficient, continuous, and automated construction.

[0004] In order to solve these problems, the industry has begun to actively explore the automated mixing and conveying technology of lightweight fluidized solidified soil. However, most of the existing automated mixing and conveying devices have problems such as complex structure, high maintenance cost, poor adaptability, etc., which make it difficult to meet the needs of different engineering environments and material properties. Therefore, developing an automated mixing and conveying device for premixed lightweight fluidized solidified soil with simple structure, convenient operation, stable performance and strong adaptability has become a technical problem that needs to be solved urgently.

[0005] In terms of technology research and development, domestic and foreign scholars and engineers have made some useful attempts. For example, by improving the structure and mixing method of the mixer, the mixing efficiency and uniformity of the mixture can be improved; by optimizing the design and control strategy of the conveying system, energy consumption and blockage risks can be reduced; by introducing advanced sensors and control systems, precise control of material dosage and automatic monitoring of the construction process can be achieved. However, most of these technologies are still in the research stage and have not yet formed mature products and been widely used in actual projects.

[0006] Therefore, the present invention proposes an automatic mixing and conveying device for premixed lightweight fluidized solidified soil, aiming to solve the problems existing in the prior art through technological innovation, improve the preparation efficiency and construction quality of lightweight fluidized solidified soil, and promote the wide application of this material in civil engineering and construction industries. The device of the present invention not only has the advantages of simple structure, convenient operation, stable performance, strong adaptability, etc., but also can realize the precise control of material dosage, uniform mixing of the mixture and automatic monitoring of the construction process, which provides a strong technical guarantee for the efficient preparation and high-quality construction of lightweight fluidized solidified soil. Summary of the invention

[0007] In view of the above problems in the prior art, the present invention provides an automated mixing and conveying device for premixed lightweight fluidized solidified soil, aiming to solve the problems of low efficiency and low proportioning accuracy in the preparation and conveying process of the existing lightweight fluidized solidified soil, which makes it difficult to meet the requirements of modern engineering for efficient, continuous and automated construction.

[0008] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows: providing an automatic mixing and conveying device for premixed light fluidized solidified soil, which includes a mixing system, a conveying system and a control system;

[0009] The mixing system includes a mixing bin, to which are connected a soil material feeding module, a water inlet device, a curing agent feeding module, an additive adding module and a stirring device, all of which are electrically connected to the control system;

[0010] The conveying system includes a pre-storage bin and a pumping device electrically connected to the control system;

[0011] The soil material feeding module crushes and screens the soil material and quantitatively transports the processed soil material to the mixing bin; the water inlet device quantitatively transports water to the mixing bin; the curing agent feeding module quantitatively transports the curing agent to the mixing bin; the additive adding module quantitatively transports the additive to the mixing bin; the stirring device stirs the soil material, water, curing agent and additive in the mixing bin;

[0012] The pre-storage bin is connected with the mixing bin through a fluidized solidified soil conveying pipe assembly, and a pumping device is connected to the outlet end of the pre-storage bin.

[0013] Furthermore, a plurality of feed interfaces are provided on the top of the mixing bin; the outlet ends of the soil material feeding module, the water inlet device, the curing agent feeding module and the additive adding module are all connected to the mixing bin through the feed interfaces.

[0014] Further, the soil material feeding module includes a conveyor belt assembly, a crushing assembly, a screening drum assembly and a first tubular screw weighing conveyor;

[0015] The crushing assembly includes a feed hopper, a crushing disc is rotatably arranged at the bottom of the feed hopper, the crushing disc is driven to rotate by a motor, and a discharge guide plate is arranged below the crushing disc; the discharge port of the conveyor belt assembly is located at the top of the feed hopper;

[0016] The screening drum assembly includes a driving component, a drum screen and a collecting plate arranged below the drum screen. The driving component drives the drum screen to rotate around its own axis. The drum screen is arranged to be inclined transversely. A drum screen feed port is arranged on one side of the high side of the drum screen.

[0017] The discharge port of the conveyor belt assembly is connected to the top inlet of the feed hopper, the bottom outlet of the feed hopper is connected to the feed port of the drum screen, the discharge port of the collecting plate is connected to the feed port of the first tubular screw weighing conveyor, and the discharge port of the first tubular screw weighing conveyor is connected to the mixing bin through a feed interface;

[0018] A first switch valve is provided at the bottom outlet of the feed hopper and the outlet of the collecting plate; the conveyor belt assembly, the motor, the driving component, the first tubular screw weighing conveyor and the first switch valve are all electrically connected to the control system.

[0019] Furthermore, the water inlet device includes a water inlet pipe, one end of which is connected to the mixing bin via a feed interface, the other end of which is connected to a water source, and the water inlet pipe is connected to a metering pump electrically connected to the control system.

[0020] Furthermore, the curing agent feeding module includes a curing agent storage tank, the bottom discharge port of the curing agent storage tank is connected to a second tubular screw weighing conveyor electrically connected to the control system, and the discharge port of the second tubular screw weighing conveyor is connected to the mixing bin through a feed interface.

[0021] Furthermore, the additive adding module includes an additive box body arranged on the top of the mixing bin, a box cover is arranged on the top of the additive box body, a discharge pipe is arranged on the bottom of the additive box body, the bottom end of the discharge pipe is connected with the mixing bin through a feed interface, and an additive weighing assembly is arranged in the middle of the discharge pipe. The additive weighing assembly includes a weighing box body and a rotating motor arranged on the outer wall of the weighing box body, a feed channel and a discharge channel connected with the discharge pipe are respectively arranged on the top and bottom of the weighing box body, a second switch valve is arranged in the feed channel, a rotating rod and a supporting plate are arranged inside the weighing box body, one end of the rotating rod passes through the middle of the supporting plate and is fixedly connected thereto, and the other end passes through the weighing box body and is connected to the output end of the rotating motor through a transmission mechanism, and a gravity sensing plate is arranged on the upper end surface of the supporting plate; the area of ​​the upper end surfaces of the supporting plate and the gravity sensing plate is the same as the cross-sectional area of ​​the weighing box body; the rotating motor, the second switch valve and the gravity sensing plate are all electrically connected to the control system.

[0022] Further, the stirring device includes a stirring shaft and a variable frequency motor electrically connected to the controller;

[0023] The stirring shaft is arranged vertically, one end of the stirring shaft is located inside the mixing bin and is provided with a stirring rod and a stirring blade, and the other end is located outside the mixing bin and is connected with a driven pulley; the frequency conversion motor is located outside the mixing bin, and a driving pulley is fixedly connected to the output shaft of the frequency conversion motor, and the driven pulley and the driving pulley are driven by a belt.

[0024] Furthermore, the pre-storage bin is located on one side below the mixing bin, and a fluidized solidified soil inlet is provided at the top of the pre-storage bin; a fluidized solidified soil outlet is provided at the bottom of the mixing bin; the fluidized solidified soil inlet and the fluidized solidified soil outlet are connected through a fluidized solidified soil conveying pipe assembly, and the fluidized solidified soil conveying pipe assembly is provided with a third switch valve and a first gear pump electrically connected to the control system.

[0025] Furthermore, the pumping device includes a fluidized solidified soil pumping pipe, one end of the fluidized solidified soil pumping pipe is connected to the pre-storage bin, the other end of the fluidized solidified soil pumping pipe is connected to the injection head, and a second gear pump is arranged in the middle of the fluidized solidified soil pumping pipe;

[0026] A fluidized solidified soil circulation component is arranged outside the pre-storage bin, and the fluidized solidified soil circulation component includes a circulation pipe, and the circulation pipe is coiled on the outer wall of the pre-storage bin. A third gear pump is arranged in the middle of the circulation pipe, and the two ends of the circulation pipe are respectively connected to the top and bottom of the pre-storage bin; the second gear pump and the third gear pump are both electrically connected to the control system.

[0027] Furthermore, a wall scraping assembly is provided on the pre-storage bin, and the wall scraping assembly includes a scraper and a screw motor electrically connected to the control system, the screw motor is arranged on the top of the pre-storage bin, and a rotating screw is fixedly connected to the output end of the pre-storage bin, the scraper is arranged inside the pre-storage bin, a screw nut matched with the rotating screw thread is arranged at the center of the scraper, and a rubber scraping ring in contact with the inner wall of the pre-storage bin is arranged on the edges around the scraper; a limit column is arranged on the internal vertical protrusion of the pre-storage bin; a notch that slidably matches with the limit column is arranged at the same position of the scraper and the rubber scraping ring.

[0028] The beneficial effects of the present invention are:

[0029] 1. The automatic mixing and conveying device for premixed light fluidized solidified soil in the present invention has a mixing system that mixes a certain amount of soil, water, curing agent and additives to prepare light fluidized solidified soil, and conveys the light fluidized solidified soil to a pre-storage bin through a fluidized solidified soil conveying pipe assembly, while a pumping device pumps the light fluidized solidified soil in the pre-storage bin to a designated location for construction. The entire preparation process and pumping process of the light fluidized solidified soil are realized through a control system, which can not only realize the precise control of the material dosage, the uniform mixing of the mixture and the automatic pumping of the construction process, but also improve the preparation efficiency and construction quality of the light fluidized solidified soil, and promote the wide application of the light fluidized solidified soil in civil engineering and construction industries.

[0030] 2. The automatic mixing and conveying device for premixed light fluidized solidified soil in the present invention realizes accurate metering and conveying of soil materials by setting a first tubular screw weighing conveyor, accurate metering and pumping of water by a metering pump, accurate metering and conveying of curing agent by a second tubular screw weighing conveyor, and accurate metering and addition of additives by an additive weighing assembly, thereby ultimately achieving the purpose of ensuring the controllable quality of the mixture.

[0031] 3. The automatic mixing and conveying device for premixed light fluidized solidified soil in the present invention has a fluidized solidified soil circulation component outside the pre-storage bin, which circulates and pumps the light fluidized solidified soil in the pre-storage bin to ensure that the light fluidized solidified soil has a uniform texture and avoids static sedimentation and separation of the light fluidized solidified soil.

[0032] 4. The automatic mixing and conveying device for premixed light fluidized solidified soil in the present invention is provided with a wall scraper assembly on the pre-storage bin, which is used to scrape off the light fluidized solidified soil attached to the inner wall of the pre-storage bin to prevent the light fluidized solidified soil from adhering to the inner wall of the pre-storage bin for a long time, thereby ensuring the smoothness of the conveying of the light fluidized solidified soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the automatic mixing and conveying device for premixed lightweight fluidized solidified soil.

[0034] Figure 2 It is a structural schematic diagram of the soil material feeding module.

[0035] Figure 3 Schematic diagram of the structure of the additive addition module.

[0036] Figure 4 It is a schematic diagram of the front view structure of the additive weighing component.

[0037] Figure 5 It is a schematic diagram of the side view structure of the additive weighing component.

[0038] Figure 6It is a schematic diagram of the structure of the stirring device.

[0039] Figure 7 It is a schematic diagram of the structure of the wall scraper component.

[0040] Figure 8 It is a schematic diagram of the top view structure of the scraper.

[0041] Among them, 1. Mixing silo;

[0042] 2. Soil material feeding module; 21. Conveyor belt assembly; 22. Crushing assembly; 221. Feed hopper; 222. Crushing cutter disc; 223. Discharging guide plate;

[0043] 23. Screening drum assembly; 231. Drum screen; 232. Collecting plate; 233. Drum screen inlet;

[0044] 24. The first tubular screw weighing conveyor;

[0045] 3. Water inlet device; 31. Water inlet pipe; 32. Metering pump;

[0046] 4. Curing agent feeding module; 41. Curing agent storage tank; 42. Second tubular screw weighing conveyor;

[0047] 5. Additive adding module; 51. Additive box; 52. Box cover; 53. Discharge pipe; 54. Additive weighing assembly; 541. Weighing box; 542. Rotating motor; 543. Feed channel; 544. Discharge channel; 545. Second switch valve; 546. Rotating rod; 547. Loading plate; 548. Gravity sensing plate;

[0048] 6. stirring device; 61. stirring shaft; 62. variable frequency motor; 63. stirring rod; 64. stirring blade; 65. driven pulley; 66. driving pulley;

[0049] 7. Pre-storage warehouse;

[0050] 8. Pumping device; 81. Fluidized solidified soil pumping pipe; 82. Injection head; 83. Second gear pump;

[0051] 9. Control system;

[0052] 10. Feeding interface;

[0053] 11. First switch valve;

[0054] 12. Fluidized solidified soil conveying pipe assembly;

[0055] 13. The third switch valve;

[0056] 14. The first gear pump;

[0057] 15. Fluidized solidified soil circulation assembly; 151. Circulation pipe; 152. Third gear pump;

[0058] 16. Scraper; 17. Screw motor; 18. Rotating screw; 19. Screw nut; 20. Rubber scraper; 21. Limit column; 22. Notch. DETAILED DESCRIPTION

[0059] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0060] like Figures 1 to 8 As shown, the present invention provides an automatic mixing and conveying device for premixed light fluidized solidified soil, which includes a mixing system, a conveying system and a control system 9. The mixing system includes a mixing bin 1, to which a soil material feeding module 2, a water inlet device 3, a curing agent feeding module 4, an additive adding module 5 and a stirring device 6 are connected, all of which are electrically connected to the control system 9; the conveying system includes a pre-storage bin 7 and a pumping device 8 electrically connected to the control system 9; the soil material feeding module 2 crushes and screens the soil material and quantitatively conveys the processed soil material to the mixing bin 1; the water inlet device 3 quantitatively conveys water to the mixing bin 1; the curing agent feeding module 4 quantitatively conveys the curing agent to the mixing bin 1; the additive adding module 5 quantitatively conveys the additive to the mixing bin 1; and the stirring device 6 stirs the soil material, water, curing agent and additive in the mixing bin 1. The pre-storage bin 7 is connected to the mixing bin 1 through a fluidized solidified soil conveying pipe assembly 12, and the outlet end of the pre-storage bin 7 is connected to a pumping device 8.

[0061] The basic principle of the automatic mixing and conveying device for premixed lightweight fluidized solidified soil is as follows: the control system 9 includes a PLC controller, which can be set on the outer wall of the mixing bin 1. The PLC controller has a built-in control program to control the mixing system and the conveying system. The mixing system mixes a certain amount of soil, water, curing agent and additives to prepare lightweight fluidized solidified soil, and conveys the lightweight fluidized solidified soil to the pre-storage bin 7 through the fluidized solidified soil conveying pipe assembly 12, and the pumping device 8 pumps the lightweight fluidized solidified soil in the pre-storage bin 7 to a designated location for construction. The entire preparation process and pumping process of the lightweight fluidized solidified soil are realized through the control system 9, which can not only realize the precise control of the material dosage, the uniform mixing of the mixture and the automatic pumping of the construction process, but also improve the preparation efficiency and construction quality of the lightweight fluidized solidified soil, and promote the wide application of the lightweight fluidized solidified soil in civil engineering and construction industries.

[0062] Preferably, but not limitedly, a plurality of feed interfaces 10 are provided on the top of the mixing bin 1; the outlet ends of the soil material feeding module 2, the water inlet device 3, the curing agent feeding module 4 and the additive adding module 5 are all connected to the mixing bin 1 through the feed interface 10, so as to facilitate the assembly and disassembly between the soil material feeding module 2, the water inlet device 3, the curing agent feeding module 4 and the additive adding module 5 and the mixing bin 1, and facilitate the later maintenance and replacement of parts.

[0063] As a specific setting method of the soil material feeding module 2, the soil material feeding module 2 includes a conveyor belt assembly 21, a crushing assembly 22, a screening drum assembly 23 and a first tubular spiral weighing conveyor 24; the crushing assembly 22 includes a feed hopper 221, and a crushing cutter disc 222 is rotatably arranged at the bottom of the feed hopper 221, and the crushing cutter disc 222 is driven to rotate by a motor, and a discharge guide plate 223 is arranged below the crushing cutter disc 222; the discharge port of the conveyor belt assembly 21 is located at the top of the feed hopper 221; the screening drum assembly 23 includes a driving component, a drum screen 231 and a collecting plate 232 arranged below the drum screen 231, the driving component drives the drum screen 231 to rotate around its own axis, and the driving component can be a driving device such as a motor, and the drum screen 231 is arranged to be inclined laterally A drum screen feed port 233 is provided on one side of the high side direction of the drum screen 231; the discharge port of the conveyor belt assembly 21 is connected to the top entrance of the feed hopper 221, and the bottom outlet of the feed hopper 221 is connected to the drum screen feed port 233; the discharge port of the collecting plate 232 is connected to the feed port of the first tubular screw weighing conveyor 24, and the discharge port of the first tubular screw weighing conveyor 24 is connected to the mixing bin 1 through a feed interface 10; the bottom outlet of the feed hopper 221 and the discharge port of the collecting plate 232 are both provided with a first switch valve 11, and the first switch valve 11 is set to control the transportation of soil materials; the conveyor belt assembly 21, the motor, the driving component, the first tubular screw weighing conveyor 24 and the first switch valve 11 are all electrically connected to the control system 9.

[0064] The principle of the soil material feeding module 2 is as follows: the soil material in the light fluidized solidified soil can be made of local rock, loam and excavated soil, or miscellaneous fill, fine particles of construction waste, engineering mud, silt, tailings, etc. The soil material, as the basic material of the light fluidized solidified soil, provides the main volume and mass. The conveyor belt assembly 21 first conveys the soil material to the feed hopper 221, and the crushing cutter disc 222 at the bottom of the feed hopper 221 crushes the soil material, and conveys the crushed soil material to the drum screen feed port 233 through the discharge guide plate 223. Due to the rotation of the drum screen 231, impurities such as small stones in the crushed soil material are screened and filtered. The filtered soil material enters the first tubular screw weighing conveyor 24 through the collecting plate 232. The first tubular screw weighing conveyor 24 quantitatively conveys the soil material to the mixing bin 1 to wait for mixing.

[0065] As a specific arrangement of the water inlet device 3, the water inlet device 3 includes a water inlet pipe 31, one end of the water inlet pipe 31 is connected to the mixing bin 1 through a feed interface 10, the other end of the water inlet pipe 31 is connected to a water source, and a metering pump 32 electrically connected to the control system 9 is connected to the water inlet pipe 31. The metering pump 32 can pump water into the mixing bin 1 in a fixed amount.

[0066] As a specific setting mode of the curing agent feeding module 4, the curing agent feeding module 4 includes a curing agent storage tank 41, and the bottom discharge port of the curing agent storage tank 41 is connected to a second tubular screw weighing conveyor 42 electrically connected to the control system 9, and the discharge port of the second tubular screw weighing conveyor 42 is connected to the mixing bin 1 through a feed interface 10. Curing agent is a key component in light fluid solidified soil, which can make the soil form a hard solid structure. Curing agent usually has CaO, active Al2O3 and SiO2 as main components, and functional additives and active stimulants with improved surface properties of soil particles are added to form functional composite cementitious materials. The type and dosage of curing agent need to be matched according to the properties of the soil material to ensure the best curing effect. At the specific construction site, cement powder is usually selected as the curing agent, so the second tubular screw weighing conveyor 42 is used to quantitatively transport cement powder.

[0067] As a specific setting mode of the additive adding module 5, the additive adding module 5 includes an additive box body 51 arranged on the top of the mixing bin 1, a box cover 52 is arranged on the top of the additive box body 51, a discharge pipe 53 is arranged on the bottom of the additive box body 51, the bottom end of the discharge pipe 53 is connected with the mixing bin 1 through a feed interface 10, an additive weighing component 54 is arranged in the middle of the discharge pipe 53, the additive weighing component 54 includes a weighing box body 541 and a rotating motor 542 arranged on the outer wall of the weighing box body 541, and a feed channel 543 and a discharge channel connected with the discharge pipe 53 are respectively arranged on the top and bottom of the weighing box body 541. 544, a second switch valve 545 is arranged in the feed channel 543, a rotating rod 546 and a supporting plate 547 are arranged inside the weighing box 541, one end of the rotating rod 546 passes through the middle part of the supporting plate 547 and is fixedly connected thereto, the other end passes through the weighing box 541 and is connected to the output end of the rotating motor 542 through a transmission mechanism, and a gravity sensing plate 548 is arranged on the upper end surface of the supporting plate 547; the area of ​​the upper end surfaces of the supporting plate 547 and the gravity sensing plate 548 is the same as the cross-sectional area of ​​the weighing box 541; the rotating motor 542, the second switch valve 545 and the gravity sensing plate 548 are all electrically connected to the control system 9.

[0068] In order to improve the working performance and physical and mechanical properties of fluidized solidified soil, a certain amount of polymer additives is usually added. These additives can make the internal structure of the fluidized solidified soil present a mesh structure, thereby improving its tensile strength and durability. However, these additives are usually in powder form, and the amount of additives is not as large as that of the curing agent, so the additive weighing component 54 is selected to weigh the additive. The process of weighing the additive by the additive weighing component 54 is as follows: the control system 9 controls the second switch valve 545 to open, and then the additive is unloaded from the additive box 51 and enters the gravity sensing plate 548 in the weighing box 541. When the gravity sensing plate 548 senses that the additive has reached the preset weight, the second switch valve 545 is closed, and the control system 9 controls the rotating motor 542 to rotate 180°, and the additive on the gravity sensing plate 548 is poured and enters the mixing bin 1 through the discharge pipe 53.

[0069] Furthermore, the stirring device 6 includes a stirring shaft 61 and a variable frequency motor 62 electrically connected to the controller; the stirring shaft 61 is vertically arranged, one end of the stirring shaft 61 is located inside the mixing bin 1 and is provided with a stirring rod 63 and a stirring blade 64, and the other end is located outside the mixing bin 1 and is connected to a driven pulley 65; the variable frequency motor 62 is located outside the mixing bin 1, and a driving pulley 66 is fixedly connected to the output shaft of the variable frequency motor 62, and a belt transmission is used between the driven pulley 65 and the driving pulley 66.

[0070] When a certain amount of soil, water, curing agent and additives are transported to the mixing bin 1, the control system 9 starts the frequency conversion motor 62 to rotate, and the frequency conversion motor 62 drives the stirring shaft 61 to rotate through the driven pulley 65 and the driving pulley 66. The rotating stirring shaft 61 drives the stirring rod 63 and the stirring blade 64 to mix the soil, water, curing agent and additives for a preset time to form a light fluidized solidified soil.

[0071] Furthermore, the pre-storage bin 7 is located on one side below the mixing bin 1, and a fluidized solidified soil inlet is provided at the top of the pre-storage bin 7; a fluidized solidified soil outlet is provided at the bottom of the mixing bin 1; the fluidized solidified soil inlet and the fluidized solidified soil outlet are connected through a fluidized solidified soil delivery pipe assembly 12, and a third switch valve 13 and a first gear pump 14 electrically connected to the control system 9 are provided on the fluidized solidified soil delivery pipe assembly 12. The control system 9 opens the third switch valve 13 and starts the first gear pump 14, and the prepared light fluidized solidified soil is pumped from the mixing bin 1 to the pre-storage bin 7, so that the mixing bin 1 can perform the next operation, and the pre-storage bin 7 pre-stores the light fluidized solidified soil to meet the construction needs.

[0072] Furthermore, the pumping device 8 includes a fluidized solidified soil pumping pipe 81, one end of which is connected to the pre-storage bin 7, the other end of which is connected to a spray head 82, and a second gear pump 83 is provided in the middle of the fluidized solidified soil pumping pipe 81. When light fluidized solidified soil construction is required at a designated location, the second gear pump 83 is started by the control system 9, and the second gear pump 83 pumps out the light fluidized solidified soil to achieve construction.

[0073] A fluidized solidified soil circulation component 15 is arranged outside the pre-storage bin 7, and the fluidized solidified soil circulation component 15 includes a circulation pipe 151, and the circulation pipe 151 is coiled on the outer wall of the pre-storage bin 7. A third gear pump 152 is arranged in the middle of the circulation pipe 151, and both ends of the circulation pipe 151 are respectively connected to the top and bottom of the pre-storage bin 7; the second gear pump 83 and the third gear pump 152 are both electrically connected to the control system 9.

[0074] In this embodiment, the volume of the pre-storage bin 7 is much larger than that of the mixing bin 1, so it is not suitable to use the traditional stirring device 6 to stir the lightweight fluidized solidified soil inside the pre-storage bin 7. Therefore, a fluidized solidified soil circulation component 15 is provided outside the pre-storage bin 7. The fluidized solidified soil circulation component 15 circulates and pumps the lightweight fluidized solidified soil in the pre-storage bin 7 to ensure that the lightweight fluidized solidified soil has a uniform texture and avoid static sedimentation and separation of the lightweight fluidized solidified soil.

[0075] The pre-storage bin 7 is provided with a wall scraping assembly, which includes a scraper 16 and a screw motor 17 electrically connected to the control system 9. The screw motor 17 is arranged at the top of the pre-storage bin 7. A rotating screw 18 is fixedly connected to the output end of the pre-storage bin 7. The scraper 16 is arranged inside the pre-storage bin 7. A screw nut 19 threadedly matched with the rotating screw 18 is arranged at the center of the scraper 16. A rubber scraper ring 20 in contact with the inner wall of the pre-storage bin 7 is arranged at the edges of the scraper 16. The rubber scraper ring 20 can not only be in close contact with the inner wall of the pre-storage bin 7 to ensure clean scraping, but also the rubber scraper ring 20 is soft and will not scratch the pre-storage bin 7. A limit column 21 is arranged on the internal vertical protrusion of the pre-storage bin 7; a notch 22 slidingly matched with the limit column 21 is arranged at the same position of the scraper 16 and the rubber scraper ring 20. The wall scraping assembly is used to scrape off the light fluidized solidified soil attached to the inner wall of the pre-storage bin 7, to prevent the light fluidized solidified soil from adhering to the inner wall of the pre-storage bin 7 for a long time, and to ensure the smoothness of the transportation of the light fluidized solidified soil.

[0076] In summary, the present invention proposes an automatic mixing and conveying device for premixed lightweight fluidized solidified soil, aiming to solve the problems existing in the prior art through technological innovation, improve the preparation efficiency and construction quality of lightweight fluidized solidified soil, and promote the wide application of this material in civil engineering and construction industries. The device of the present invention not only has the advantages of simple structure, convenient operation, stable performance, strong adaptability, etc., but also can realize the precise control of material dosage and uniform mixing of the mixture, providing a strong technical guarantee for the efficient preparation and high-quality construction of lightweight fluidized solidified soil.

Claims

1. Automatic mixing and conveying device for premixed light fluidized solidified soil, characterized in that: Including mixing system, conveying system and control system; The mixing system comprises a mixing bin, to which are connected a soil material feeding module, a water inlet device, a curing agent feeding module, an additive adding module and a stirring device, all of which are electrically connected to the control system; The delivery system includes a pre-storage bin and a pumping device electrically connected to the control system; The soil material feeding module crushes and screens the soil material and quantitatively transports the processed soil material to the mixing bin; the water inlet device quantitatively transports water to the mixing bin; the curing agent feeding module quantitatively transports the curing agent to the mixing bin; the additive adding module quantitatively transports the additive to the mixing bin; the stirring device stirs the soil material, water, curing agent and additive in the mixing bin; The pre-storage bin is communicated with the mixing bin through a fluidized solidified soil conveying pipe assembly, and the outlet end of the pre-storage bin is connected to the pumping device.

2. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 1 is characterized in that: A plurality of feed interfaces are arranged on the top of the mixing bin; the outlet ends of the soil material feeding module, the water inlet device, the curing agent feeding module and the additive adding module are all connected to the mixing bin through the one feed interface.

3. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 2 is characterized in that: The soil material feeding module includes a conveyor belt assembly, a crushing assembly, a screening drum assembly and a first tubular screw weighing conveyor; The crushing assembly includes a feed hopper, a crushing cutter disc is rotatably arranged at the bottom of the feed hopper, the crushing cutter disc is driven to rotate by a motor, and a discharge guide plate is arranged below the crushing cutter disc; the discharge port of the conveyor belt assembly is located at the top of the feed hopper; The screening drum assembly comprises a driving component, a drum screen and a collecting plate arranged below the drum screen, wherein the driving component drives the drum screen to rotate around its own axis, the drum screen is arranged to be inclined transversely, and a drum screen feed port is arranged on one side of the high side of the drum screen; The discharge port of the conveyor belt assembly is connected to the top inlet of the feed hopper, the bottom outlet of the feed hopper is connected to the feed port of the drum screen, the discharge port of the collecting plate is connected to the feed port of the first tubular screw weighing conveyor, and the discharge port of the first tubular screw weighing conveyor is connected to the mixing bin through one of the feed interfaces; A first switch valve is provided at the bottom outlet of the feed hopper and the outlet of the collecting plate; the conveyor belt assembly, the motor, the driving component, the first tubular screw weighing conveyor and the first switch valve are all electrically connected to the control system.

4. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 3 is characterized in that: The water inlet device includes a water inlet pipe, one end of which is connected to the mixing bin via a feed interface, the other end of which is connected to a water source, and a metering pump electrically connected to the control system is connected to the water inlet pipe.

5. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 4 is characterized in that: The curing agent feeding module includes a curing agent storage tank, the bottom discharge port of the curing agent storage tank is connected to a second tubular screw weighing conveyor electrically connected to the control system, and the discharge port of the second tubular screw weighing conveyor is connected to the mixing bin through a feed interface.

6. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 1 is characterized in that: The additive adding module comprises an additive box body arranged on the top of the mixing bin, a box cover is arranged on the top of the additive box body, a discharge pipe is arranged on the bottom of the additive box body, the bottom end of the discharge pipe is connected with the mixing bin through the one of the feed interfaces, an additive weighing assembly is arranged in the middle of the discharge pipe, the additive weighing assembly comprises a weighing box body and a rotating motor arranged on the outer wall of the weighing box body, a feed channel and a discharge channel connected with the discharge pipe are respectively arranged on the top and bottom of the weighing box body, a second switch valve is arranged in the feed channel, a rotating rod and a bearing plate are arranged inside the weighing box body, one end of the rotating rod passes through the middle of the bearing plate and is fixedly connected thereto, the other end passes through the weighing box body and is connected to the output end of the rotating motor through a transmission mechanism, a gravity sensing plate is arranged on the upper end surface of the bearing plate; the area of ​​the upper end surfaces of the bearing plate and the gravity sensing plate is the same as the cross-sectional area of ​​the weighing box body; the rotating motor, the second switch valve and the gravity sensing plate are all electrically connected to the control system.

7. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 1 is characterized in that: The stirring device comprises a stirring shaft and a variable frequency motor electrically connected to the controller; The stirring shaft is arranged vertically, one end of the stirring shaft is located inside the mixing bin and is provided with a stirring rod and a stirring blade, and the other end is located outside the mixing bin and is connected with a driven pulley; the variable frequency motor is located outside the mixing bin, and a driving pulley is fixedly connected to the output shaft of the variable frequency motor, and the driven pulley and the driving pulley are driven by a belt.

8. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 1 is characterized in that: The pre-storage bin is located on one side below the mixing bin, and a fluidized solidified soil inlet is provided on the top of the pre-storage bin; The bottom of the mixing bin is provided with a fluidized solidified soil outlet; The fluidized solidified soil inlet and the fluidized solidified soil outlet are connected through the fluidized solidified soil conveying pipe assembly, and the fluidized solidified soil conveying pipe assembly is provided with a third switch valve and a first gear pump electrically connected to the control system.

9. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 1 is characterized in that: The pumping device comprises a fluidized solidified soil pumping pipe, one end of which is connected to the pre-storage bin, the other end of which is connected to a spray head, and a second gear pump is arranged in the middle of the fluidized solidified soil pumping pipe; A fluidized solidified soil circulation component is arranged outside the pre-storage bin, and the fluidized solidified soil circulation component includes a circulation pipe, and the circulation pipe is coiled on the outer wall of the pre-storage bin. A third gear pump is arranged in the middle of the circulation pipe, and the two ends of the circulation pipe are respectively connected to the top and bottom of the pre-storage bin; the second gear pump and the third gear pump are both electrically connected to the control system.

10. The automatic mixing and conveying device for premixed light fluidized solidified soil according to claim 9, characterized in that: The pre-storage bin is provided with a wall scraper assembly, which includes a scraper and a lead screw motor electrically connected to the control system, the lead screw motor is arranged on the top of the pre-storage bin, and a rotating lead screw is fixedly connected to the output end of the pre-storage bin, the scraper is arranged inside the pre-storage bin, a lead screw nut matched with the rotating lead screw thread is arranged at the center of the scraper, and a rubber scraper ring in contact with the inner wall of the pre-storage bin is arranged on the edges around the scraper; a limiting column is arranged on the internal vertical protrusion of the pre-storage bin; a notch that slidably matches with the limiting column is arranged at the same position of the scraper and the rubber scraper ring.

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