Stirring structure and fluidized stabilized soil pulping station

Abstract

The invention provides a stirring structure and a fluidized stabilized soil pulping station. The stirring structure comprises a stirring frame, a stirring cavity fixedly arranged on the stirring frame, a stirring assembly rotationally arranged in the stirring cavity, a first driving mechanism for driving the stirring assembly to rotate, and a second driving mechanism for driving the stirring assembly to be separated from the stirring cavity; the stirring assembly comprises a stirring cavity and a stirring assembly, the stirring cavity is provided with a hemispherical bottom surface, the stirring assembly comprises a stirring shaft and a hollow hemispherical stirring part which is concentrically and fixedly connected with the stirring shaft and matched with the hemispherical bottom surface, and a plurality of filtering holes are formed in the stirring part. And the grinding action is realized in the pulping process by matching the spherical surface, so that the particle size is smaller, and mud and water are more uniformly mixed.

Description

Technical Field

[0001] This invention relates to the field of fluidized solidified soil processing, and more specifically, to a mixing structure and a fluidized solidified soil slurry preparation station. Background Technology

[0002] Construction waste disposal remains a persistent challenge. Due to the large proportion of construction waste, traditional landfill methods are not environmentally friendly and can lead to ground subsidence. Furthermore, traditional backfilling methods require layered compaction with high density requirements, which is difficult to achieve in confined spaces, resulting in extended construction periods and increased labor costs. Moreover, traditional materials such as sand, gravel, and earthwork have discrete cavities, and insufficient compaction can easily lead to settlement and ground subsidence. Therefore, fluidized bed solidification has become the main method for handling construction waste in the current construction industry. Fluidized bed solidification uses waste soil and slurry as raw materials to achieve internal recycling within the project, reducing sand and gravel mining and cement usage to meet the requirements of low-carbon economy.

[0003] Currently, in the processing of fluidized solidified soil, excavators are typically used to dig up construction waste, which is then crushed. The crushed material is then placed in a mixer and mixed with water, additives, etc., to form fluidized solidified soil for backfilling.

[0004] The above method has the following drawbacks: Due to the wide variety of construction waste and the significant differences in soil quality in different regions, such as sand, clay, and even steel bars from construction sites, the current method relies solely on crushing and mixing. Since the crushed waste remains in a gravel state, the resulting fluidized solidified soil is prone to segregation, bleeding, and stratification, failing to achieve a fully and uniformly mixed state. Consequently, the soil structure is poor during backfilling. Furthermore, the hard fragments such as steel bars contained in the construction waste can easily damage the equipment. The current fluidized solidified soil preparation plant requires manual cleaning of the mixing chamber after a period of use, which not only necessitates work stoppages but also poses construction hazards.

[0005] Therefore, it is necessary to improve the existing mixing structure and fluidized solidified soil preparation station to overcome the above-mentioned defects. Summary of the Invention

[0006] The main purpose of this application is to provide a mixing structure and a fluidized solidified soil slurry preparation station, which adopts a basket-type mixing mechanism. During slurry preparation, it can not only filter impurities in sand and soil, but also use the spherical surface to achieve grinding action during the slurry preparation process, resulting in smaller particle size and more uniform mud-water mixing.

[0007] To achieve the above objectives, in a first aspect, this application provides a mixing structure and a fluidized solidified soil slurry preparation station, including a mixing frame, a mixing chamber fixedly disposed on the mixing frame, a mixing component rotatably disposed in the mixing chamber, a first driving mechanism for driving the mixing component to rotate, and a second driving mechanism for driving the mixing component to disengage from the mixing chamber; The stirring chamber has a hemispherical bottom surface, and the stirring assembly includes a stirring shaft and a hollow hemispherical stirring part that is concentrically fixed to the stirring shaft and cooperates with the hemispherical bottom surface. The stirring part is provided with a plurality of filter holes.

[0008] Optionally, the stirring section is composed of several filter plates spliced ​​together, and a reinforcing rib is fixedly provided at the splice of adjacent filter plates. The reinforcing rib is provided with several through holes distributed along its length.

[0009] Optionally, a plurality of radially arranged reinforcing rods are fixedly provided between the stirring shaft and the filter plate.

[0010] Optionally, the stirring chamber further includes a conical guide cavity at the bottom that is connected to the hemispherical bottom surface.

[0011] Optionally, the second drive mechanism includes a tilting arm rotatably connected to the stirring frame and a drive cylinder rotatably connected at one end to the tilting arm, wherein the stirring assembly is rotatably disposed at one end of the tilting arm.

[0012] Optionally, the first drive mechanism is a hydraulic motor.

[0013] To achieve the above objectives, in a second aspect, this application provides a fluidized solidified soil slurry preparation station, comprising a frame, a curing agent proportioning and weighing mixer fixedly mounted on the frame, a mixing unit rotatably mounted within the curing agent proportioning and weighing mixer, a plurality of curing agent weighing tanks connected to the curing agent proportioning and weighing mixer, a slurry feed pipe connected to the curing agent proportioning and weighing mixer, a discharge pipe connected to the curing agent proportioning and weighing mixer, and the aforementioned mixing structure, wherein the slurry feed pipe is connected to the hemispherical bottom surface of the mixing chamber, and a slurry pump is also provided on the slurry feed pipe.

[0014] Optionally, it also includes a container, inside which the fluidized solidified soil slurry preparation station is located.

[0015] Optionally, the opening of the stirring chamber is provided with a plurality of water inlets, which are evenly distributed along the circumference of the opening of the stirring chamber.

[0016] Optionally, a weighing sensor is provided between the frame and the curing agent proportioning and weighing mixer.

[0017] The present invention provides a mixing structure and a fluidized solidified soil slurry preparation station. Compared with the prior art, its advantages are as follows: the mixing part of the slurry preparation is designed as a basket-type mixing head. Since it and the bottom surface of the mixing chamber are connected by a hemispherical fit, large particle impurities in the soil can be automatically filtered during the mixing process. Moreover, the spherical surface is used for grinding during the mixing process, resulting in smaller particle size and more uniform mud-water mixing. After a certain period of slurry preparation, the excess impurity particles are directly dumped by driving the tilting arm to rotate. This not only ensures the quality of slurry preparation but also greatly improves work efficiency and ensures construction safety. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings: Figure 1 This is a schematic diagram of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the present invention. Figure 2 .

[0019] The components include: 1. Frame; 2. Mixing rack; 3. Hemispherical bottom surface; 4. Guide cavity; 5. Mixing shaft; 6. Mixing section; 7. Tilting arm; 8. Hydraulic motor; 9. Drive cylinder; 10. Curing agent proportioning and weighing mixer; 11. Curing agent weighing tank; 12. Mixing unit; 13. Slurry feed pipe; 14. Discharge pipe; 15. Water supply port; 16. Slurry pump; 17. Valve; 18. Weighing sensor. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0024] In addition, the term "multiple" should mean two or more.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-2 As shown, a stirring structure includes a stirring frame 2, a stirring chamber fixedly disposed on the stirring frame 2, a stirring assembly rotatably disposed in the stirring chamber, a first driving mechanism for driving the stirring assembly to rotate, and a second driving mechanism for driving the stirring assembly to disengage from the stirring chamber. The stirring chamber has a hemispherical bottom surface 3. The stirring assembly includes a stirring shaft 5 and a hollow hemispherical stirring part 6 that is concentrically fixed to the stirring shaft 5 and cooperates with the hemispherical bottom surface 3. The stirring part 6 has a plurality of filter holes.

[0027] Its working principle is as follows: On the construction site, soil containing construction waste is first excavated by an excavator. After being crushed, it should be noted that crushing is not a necessary step. The soil can also be directly poured into the basket-type hollow hemispherical mixing unit 6 by the excavator. Then, the mixing is started and water is injected at the same time to achieve mud-water mixing. Larger impurities that cannot pass through the filter holes remain in the hollow hemispherical mixing unit 6, while the soil passes through the filter holes and is ground by the hemispherical surface, resulting in smaller particle size and more uniform mud-water mixing. When the impurity particles in the hemispherical mixing unit 6 reach a certain level, the second drive mechanism is controlled to flip the mixing component, directly dumping the impurities in the mixing unit 6 to avoid manual cleaning and ensure construction safety.

[0028] In this embodiment, the stirring section 6 is composed of several filter plates spliced ​​together. Reinforcing ribs are fixedly provided at the splicing points of adjacent filter plates. Several through holes are provided on the reinforcing ribs along their length. It should be noted that the filter plates can be pre-drilled on the plate material, or the filter plates themselves can be welded together by several crisscrossing steel bars. Using steel bars for welding not only results in high strength and convenient processing, but also strong wear resistance and is not prone to deformation. The through holes on the reinforcing ribs facilitate the flow of mud and water during the stirring process, and maintaining fluidity ensures the quality of the pulp.

[0029] To ensure strength, a number of radially arranged reinforcing rods are fixedly installed between the stirring shaft 5 and the filter plate, and the two ends of the reinforcing rods are welded and fixed to the stirring shaft 5 and the filter plate, respectively.

[0030] In order for the second drive mechanism to directly drive the flipping arm 7 to flip so that the stirring part 6 can be separated from the stirring chamber, the stirring chamber also includes a conical guide cavity 4 connected to the hemispherical bottom surface 3 at the bottom. Of course, the guide cavity 4 can also be cylindrical on the hemispherical bottom surface 3. However, if it is cylindrical, the stirring part 6 needs to be lifted up first before it can be flipped over, which is more troublesome than the method in this embodiment.

[0031] Preferably, the second drive mechanism includes a tilting arm 7 rotatably connected to the stirring frame 2 and a drive cylinder 9 rotatably connected to the tilting arm 7 at one end. The stirring assembly is rotatably disposed at one end of the tilting arm 7. The first drive mechanism is a hydraulic motor 8. It should be noted that the drive cylinder 9 is a hydraulic cylinder. Thus, all power devices use hydraulic form. Compared with electric drive, it has advantages such as low-speed high torque output capability, resistance to load impact, and flexible power transmission.

[0032] like Figure 1 , Figure 2As shown, a fluidized solidified soil slurry preparation station includes a frame 1, a curing agent proportioning and weighing mixer 10 fixedly mounted on the frame 1, a mixing unit 12 rotatably mounted inside the curing agent proportioning and weighing mixer 10, several curing agent weighing tanks 11 connected to the curing agent proportioning and weighing mixer 10, a slurry feed pipe 13 connected to the curing agent proportioning and weighing mixer 10, and a discharge pipe 14 connected to the curing agent proportioning and weighing mixer 10. In the above mixing structure, the slurry feed pipe 13 is connected to the hemispherical bottom surface 3 of the mixing chamber, and a slurry pump 16 is also provided on the slurry feed pipe 13. In addition, a valve 17 is provided on the discharge pipe 14, and automatic discharge is achieved by controlling the valve 17.

[0033] To facilitate the transportation of the slurry preparation station after changing construction sites, a container is also included. The fluidized solidified soil slurry preparation station is set inside the container, so the entire slurry preparation station is directly set inside the container. After the construction of one site is completed, the container can be directly hoisted and transported to the next site for use.

[0034] To achieve automatic pulping, a number of water inlets 15 are provided at the opening of the mixing chamber. The number of water inlets 15 are evenly distributed along the circumference of the opening of the mixing chamber. It should be noted that the water inlets 15 are directly connected to the water source through water supply pipes, and the water inflow can be controlled by setting a flow meter.

[0035] In order to enable automatic mixing, a weighing sensor 18 is provided between the frame 1 and the curing agent mixing and weighing mixer 10. The proportion of curing agent to be added can be set by the weighing sensor 18.

[0036] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A stirring structure, characterized in that, It includes a stirring rack, a stirring chamber fixedly mounted on the stirring rack, a stirring assembly rotatably mounted in the stirring chamber, a first driving mechanism for driving the stirring assembly to rotate, and a second driving mechanism for driving the stirring assembly to disengage from the stirring chamber; The stirring chamber has a hemispherical bottom surface, and the stirring assembly includes a stirring shaft and a hollow hemispherical stirring part that is concentrically fixed to the stirring shaft and cooperates with the hemispherical bottom surface. The stirring part is provided with a plurality of filter holes.

2. The stirring structure as described in claim 1, characterized in that: The stirring section is composed of several filter plates spliced ​​together. Reinforcing ribs are fixedly provided at the splicing points of adjacent filter plates, and several through holes are provided on the reinforcing ribs distributed along their length.

3. The stirring structure as described in claim 2, characterized in that: Several radially arranged reinforcing rods are fixedly installed between the stirring shaft and the filter plate.

4. The stirring structure as described in claim 1, characterized in that: The stirring chamber also includes a conical guide cavity at the bottom that connects to the hemispherical bottom surface.

5. The stirring structure as described in claim 4, characterized in that: The second driving mechanism includes a tilting arm rotatably connected to the stirring frame and a driving cylinder rotatably connected to the tilting arm at one end. The stirring assembly is rotatably disposed at one end of the tilting arm.

6. The stirring structure as described in claim 5, characterized in that: The first drive mechanism is a hydraulic motor.

7. A fluidized bed solidification soil preparation station, characterized in that: The device includes a frame, a curing agent proportioning and weighing mixer fixedly mounted on the frame, a mixing unit rotatably mounted inside the curing agent proportioning and weighing mixer, several curing agent weighing tanks connected to the curing agent proportioning and weighing mixer, a slurry feed pipe connected to the curing agent proportioning and weighing mixer, a discharge pipe connected to the curing agent proportioning and weighing mixer, and a mixing structure as described in claims 1-6. The slurry feed pipe is connected to the hemispherical bottom surface of the mixing chamber, and a slurry pump is also provided on the slurry feed pipe.

8. A fluidized solidified soil slurry preparation station as described in claim 7, characterized in that: It also includes a container, inside which the fluidized solidified soil slurry preparation station is located.

9. A fluidized solidified soil slurry preparation station as described in claim 7, characterized in that: The stirring chamber has several water inlets at its opening, and these water inlets are evenly distributed along the circumference of the opening of the stirring chamber.

10. A fluidized solidified soil slurry preparation station as described in claim 7, characterized in that: A weighing sensor is installed between the frame and the curing agent mixing and weighing mixer.

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