Apparatus and method for preparing construction substrate based on gasification slag, contaminated soil, fly ash

Abstract

The application belongs to the technical field of building base material preparation equipment, and particularly relates to a device and method for preparing building base material based on gasification slag, contaminated soil and fly ash. The building base material preparation device comprises a mixing tank shell, the upper end of the mixing tank shell is fixed with a driving motor, the output end of the driving motor is fixed with a stirring central shaft, the mixing tank shell and the stirring central shaft are rotationally connected, the outer side of the stirring central shaft is fixed with a linkage sealing plate, and the linkage sealing plate and the mixing tank shell are rotationally connected. The application can stir the raw materials in multiple directions, so that the raw materials are mixed more uniformly. Meanwhile, through the cooperation of the first and second crushing rollers, the raw materials with large particles can be crushed, so that the existence of large-particle raw materials is avoided. In addition, the linkage sealing plate can drive the cleaning nozzle to rotate around the stirring central shaft, so that the mixing tank shell and the elements inside the mixing tank shell can be cleaned in all directions by the stirring central shaft.

Description

Technical Field

[0001] This invention belongs to the technical field of building material preparation equipment, specifically relating to a device and method for preparing building materials based on gasification slag, contaminated soil, and fly ash. Background Technology

[0002] In recent years, with the increasing awareness of environmental protection, environmental protection and restoration have received increasing attention, and the state has introduced many environmental protection policies to promote environmental restoration and protection. Under the guidance of these policies, industrial production has become increasingly refined and advanced. Because industrial waste generated during industrial production contains large amounts of heavy metals, this waste can cause long-term and serious damage to the ecological environment. Therefore, whether and how this industrial waste can be utilized has become a concern. Currently, most industrial waste is treated harmlessly through separation, concentration, catalysis, and recycling. Among these methods, recycling industrial waste has been vigorously developed to improve resource utilization. For example, industrial waste such as gasification slag (waste slag generated during gasification furnace production), contaminated soil (contaminated soil whose properties have changed due to the infiltration of industrial waste), and fly ash (tiny ash particles produced after dye combustion) are treated harmlessly and then mixed with other raw materials to be processed into building materials (cement, bricks).

[0003] In the process of processing industrial wastes such as gasification slag, contaminated soil, and fly ash into building materials with other raw materials, the lumpy industrial wastes (such as lumpy gasification slag, lumpy contaminated soil, and chelated solidified fly ash lumps) are mostly crushed first using a crusher. However, due to the fast wear rate of existing crushers, the crushed particles are generally large, resulting in uneven mixing and large particle size when the crushed industrial waste particles are mixed with other raw materials, which in turn leads to a decline in the quality of the produced building materials. Summary of the Invention

[0004] The purpose of this invention is to provide a device for preparing building materials based on gasification slag, contaminated soil, and fly ash. This device can stir the raw materials in multiple directions, making the mixing more uniform. At the same time, through the cooperation of the first and second crushing rollers, larger particles of raw materials can be crushed to avoid the presence of large particles. Furthermore, the device can drive the cleaning nozzle to rotate around the stirring center axis through the linkage sealing plate, thereby cleaning the inside of the mixing tank shell and its internal components in all directions through the stirring center axis.

[0005] The specific technical solution adopted by this invention is as follows:

[0006] A device for preparing building materials based on gasification slag, contaminated soil, and fly ash includes a mixing tank shell. A drive motor is fixed to the upper end of the mixing tank shell, and a stirring central shaft is fixed to the output end of the drive motor. The mixing tank shell and the stirring central shaft are rotatably connected. A linkage sealing plate is fixed to the outer side of the stirring central shaft, and the linkage sealing plate is rotatably connected to the mixing tank shell. The device also includes:

[0007] Multiple crushing sections are arranged in a ring at the lower end of the linkage sealing plate. Each crushing section includes a first crushing roller and a second crushing roller, both of which are rotatably connected to the lower end of the linkage sealing plate.

[0008] A self-rotating drive unit is assembled between the mixing tank shell and the crushing unit;

[0009] When the device is in operation, the first crushing roller and the second crushing roller can rotate around their respective axes under the drive of the self-rotation drive unit, and the rotation directions of the first crushing roller and the second crushing roller are opposite.

[0010] In a preferred embodiment, both the first and second crushing rollers are provided with multiple annular grooves. A spiral stirring blade is fixed on the second crushing roller and located inside the annular groove. When the device is in operation, the spiral stirring blade and the first crushing roller do not contact each other.

[0011] In a preferred embodiment, the self-rotating drive unit includes an upper base plate, an annular internal gear ring, a plurality of first drive gears, and a plurality of second drive gears. The upper base plate is fixed inside the mixing tank shell and located at the upper end of the linkage sealing plate. The annular internal gear ring is fixed at the lower end of the upper base plate. The plurality of first drive gears are respectively fixed at the upper ends of a plurality of first crushing rollers. The first drive gears and the annular internal gear ring are meshed together. The plurality of second drive gears are respectively fixed at the upper ends of a plurality of second crushing rollers. The first drive gears and second drive gears located at the same upper end of the crushing unit are meshed together.

[0012] In a preferred embodiment, the diameter of the first drive gear is larger than the diameter of the second drive gear.

[0013] In a preferred embodiment, the interior of the mixing tank shell is further equipped with a cleaning section, which includes a gas-liquid rotary joint and multiple cleaning nozzles. The gas-liquid rotary joint is mounted on the outside of the stirring center shaft and located at the upper end of the linkage sealing plate. The multiple cleaning nozzles are evenly fixed at the lower end of the linkage sealing plate. The gas-liquid rotary joint and the cleaning nozzles are connected by a hose, and the cleaning nozzles correspond to the pulverizing section.

[0014] In a preferred embodiment, the cleaning nozzle is a rotary nozzle.

[0015] In a preferred embodiment, a plurality of bushings are fixed to the outer side of the stirring center shaft, and a plurality of transverse stirring arms are fixed to the outer side of the bushings and between two adjacent crushing sections.

[0016] A method of using a building substrate preparation device, applicable to the device described above for preparing building substrates based on gasification slag, contaminated soil, and fly ash, mainly includes the following steps:

[0017] Step 1: Add the crushed industrial waste and other ingredients into the mixing tank shell;

[0018] Step 2: Start the drive motor and stir the raw materials horizontally using the horizontal stirring arm;

[0019] Step 3: The first and second crushing rollers crush the larger raw materials through the self-rotating drive unit;

[0020] Step 4: After mixing and stirring, unload the raw materials, supply water to the gas-liquid rotary joint, and clean the inside of the mixing tank and its internal components through the cleaning nozzle.

[0021] The technical effects achieved by this invention are as follows:

[0022] This invention drives a first crushing roller and a second crushing roller to rotate around a stirring center axis via a drive motor. Simultaneously, under the action of a self-rotating drive unit, the first crushing roller and the second crushing roller rotate around their respective axes. Through the cooperation of the first crushing roller and the second crushing roller, the raw materials are stirred while the larger particles are crushed, resulting in a more uniform mixing of the raw materials. This avoids the presence of large particles in the raw materials and improves the product quality of building substrates.

[0023] This invention uses a drive motor to drive a horizontal stirring arm to stir the raw materials in the horizontal direction. At the same time, a second crushing roller drives a spiral stirring blade to rotate, which stirs the raw materials in the vertical direction. By stirring the raw materials in multiple directions, the stirring effect is improved, making the raw materials more uniformly mixed. In addition, the spiral stirring blade conveys the raw materials between the first and second crushing rollers, which facilitates the improvement of the crushing effect.

[0024] After delivering high-pressure water to the gas-liquid rotary joint, the invention drives the cleaning nozzle to rotate, cleaning the inside of the mixing tank shell. At the same time, the drive motor drives the cleaning nozzle to rotate around the stirring center axis, and in conjunction with the first and second crushing rollers rotating around their respective axes, it can thoroughly rinse the mixing tank shell, the transverse stirring arm, the first crushing roller, and the second crushing roller, thus improving the cleaning effect of the cleaning nozzle. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a rear view of the overall structure of the present invention;

[0027] Figure 3 This is a cross-sectional view of the internal structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 5 This is the present invention. Figure 4 A magnified view of a portion of point A in the middle;

[0030] Figure 6 This is a partial structural schematic diagram of the first and second crushing rollers of the present invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 10. Mixing tank shell; 11. Drive motor; 12. Stirring center shaft; 13. Linkage sealing plate; 14. Bushing; 15. Horizontal stirring arm; 16. Water passage hole; 17. Discharge port; 18. Feeding port;

[0033] 20. Crushing section;

[0034] 21. First crushing roller; 22. Second crushing roller; 23. Spiral mixing blade;

[0035] 30. Rotation drive unit;

[0036] 31. Upper base plate; 32. Annular internal gear ring; 33. First drive gear; 34. Second drive gear;

[0037] 40. Cleaning Department;

[0038] 41. Gas-liquid rotary joint; 42. Cleaning nozzle. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0043] Please see the appendix Figures 1 to 4 As shown, this is the first embodiment of the present invention. This embodiment provides a device for preparing building materials based on gasification slag, contaminated soil, and fly ash. It includes a mixing tank shell 10, a drive motor 11 fixed to the upper end of the mixing tank shell 10, a stirring central shaft 12 fixed to the output end of the drive motor 11, and the mixing tank shell 10 and the stirring central shaft 12 rotatably connected by a sealed bearing. A linkage sealing plate 13 is fixed to the upper end of the outer side of the stirring central shaft 12, and the linkage sealing plate 13 is rotatably connected to the mixing tank shell 10. Multiple bushings 14 are mounted on the outer side of the stirring central shaft 12 and at the lower end of the linkage sealing plate 13. Multiple transverse stirring arms 15 are mounted on the outer side of the bushings 14 and between two adjacent crushing sections 20. A supporting base plate is fixed to the lower end of each transverse stirring arm 15. The device also includes:

[0044] Multiple crushing sections 20 are arranged in a ring at the lower end of the linkage sealing plate 13. Each crushing section 20 includes a first crushing roller 21 and a second crushing roller 22. Both the first crushing roller 21 and the second crushing roller 22 are rotatably connected to the lower end of the linkage sealing plate 13 through sealed bearings. The first crushing roller 21 and the supporting base plate, as well as the second crushing roller 22 and the supporting base plate, are rotatably connected through sealed bearings.

[0045] Rotation drive unit 30 is assembled between mixing tank shell 10 and crushing unit 20;

[0046] The cleaning unit 40 is assembled inside the mixing tank shell 10 and is used to clean the inside of the mixing tank shell 10.

[0047] When the device is in operation, the first crushing roller 21 and the second crushing roller 22 can rotate around their respective axes under the drive of the self-rotation drive unit 30, and the rotation directions of the first crushing roller 21 and the second crushing roller 22 are opposite.

[0048] Specifically, in this embodiment, the first crushing roller 21 and the second crushing roller 22 are toothed rollers with a surface hardness of HS75-95. The crushing effect is improved by the toothed texture on the surface of the first crushing roller 21 and the second crushing roller 22. Of course, the above setting is only one of many selection methods and does not represent a specific limitation of this application document.

[0049] It should be noted that a water supply module is also used in conjunction with this device. The output end of the water supply module is connected to the cleaning section 40 through a cleaning pipe. The water supply module can deliver water to the cleaning section 40. In this embodiment, the water delivered by the water supply module to the cleaning section 40 is a high-pressure water flow to improve the rinsing effect of the cleaning section 40.

[0050] Here, a guide groove is provided on the outer side of the linkage sealing plate 13, and a limiting groove is provided on the inner wall of the mixing tank shell 10. The guide groove and the limiting groove are matched, and multiple balls are assembled between the guide groove and the limiting groove. The mixing tank shell 10 and the linkage sealing plate 13 are rotatably connected by multiple balls.

[0051] In this embodiment, the mixing tank shell 10 includes a first tank and a second tank, with the first tank located at the upper end of the second tank. A water passage hole 16 is provided at the upper end of the first tank, and a discharge port 17 is provided at the bottom of the second tank. A valve module is installed at the lower end of the discharge port 17. A feeding port 18 is provided at the upper end of the outer side of the second tank. Multiple bolt holes are provided on the outer sides of both the first and second tanks. Multiple bolt assemblies are installed between the first and second tanks, and the first and second tanks are fixedly connected by bolt assemblies passing through the bolt holes.

[0052] In this embodiment, the pulverized industrial waste and other ingredients are fed into the mixing tank shell 10 in a suitable proportion through the feeding port 18. The drive motor 11 is started, causing its output end to rotate. Through the fixed connection between the drive motor 11 and the stirring central shaft 12, the drive motor 11 drives the stirring central shaft 12 to rotate. Through the fixed connection between the stirring central shaft 12 and the bushing 14, and the fixed connection between the bushing 14 and the transverse stirring arm 15, the stirring central shaft 12 drives the bushing 14 and the transverse stirring arm 15 to stir the raw materials in the horizontal direction. Through the fixed connection between the stirring central shaft 12 and the linkage sealing plate 13, the stirring central shaft 12 drives the linkage sealing plate 13 to rotate. Since the linkage sealing plate 13 and the first crushing roller 21 are connected, the stirring central shaft 12 drives the linkage sealing plate 13 to rotate. The moving sealing plate 13 and the second crushing roller 22 are rotatably connected, so that the moving sealing plate 13 drives the first crushing roller 21 and the second crushing roller 22 to rotate around the stirring center axis 12, thereby stirring the raw materials inside the mixing tank shell 10. At the same time, the first crushing roller 21 and the second crushing roller 22 can rotate around their respective axes under the drive of the self-rotation drive unit 30, and the rotation directions of the first crushing roller 21 and the second crushing roller 22 are opposite. During the stirring of the raw materials, the cooperation of the first crushing roller 21 and the second crushing roller 22 can crush the raw materials with larger particles, thereby avoiding the product quality decline caused by large particles and uneven mixing when industrial waste is mixed with other raw materials, thus improving the product quality of building substrate.

[0053] In one specific embodiment, please refer to Figures 5 to 6 As shown, both the first crushing roller 21 and the second crushing roller 22 are provided with multiple annular grooves. A spiral stirring blade 23 is fixed on the second crushing roller 22 and located inside the annular groove. When the device is in operation, the spiral stirring blade 23 and the first crushing roller 21 do not contact each other.

[0054] In this embodiment, after the device is started, the second crushing roller 22 rotates around its own axis under the action of the self-rotation drive unit 30. Through the fixed connection between the second crushing roller 22 and the spiral stirring blade 23, the second crushing roller 22 drives the spiral stirring blade 23 to rotate. After the spiral stirring blade 23 rotates, it stirs the material in the vertical direction and stirs the material in the horizontal direction through the transverse stirring arm 15, which improves the stirring effect and makes the material more uniformly mixed. At the same time, the spiral stirring blade 23 conveys the material between the first crushing roller 21 and the second crushing roller 22, which facilitates the first crushing roller 21 and the second crushing roller 22 to crush the larger particles and further improve the product quality.

[0055] In one specific embodiment, please refer to the appendix. Figures 3 to 4As shown, the self-rotating drive unit 30 includes an upper base plate 31, an annular internal gear ring 32, a plurality of first drive gears 33 and a plurality of second drive gears 34. The upper base plate 31 is fixed inside the mixing tank shell 10 and located at the upper end of the linkage sealing plate 13. The annular internal gear ring 32 is fixed at the lower end of the upper base plate 31. The plurality of first drive gears 33 are respectively fixed at the upper ends of the plurality of first crushing rollers 21. The first drive gears 33 and the annular internal gear ring 32 are meshed and connected. The plurality of second drive gears 34 are respectively fixed at the upper ends of the plurality of second crushing rollers 22. The first drive gears 33 and the second drive gears 34 located at the upper end of the same crushing unit 20 are meshed and connected.

[0056] In this embodiment, after the device is started, the linkage sealing plate 13 drives the first crushing roller 21 and the second crushing roller 22 to rotate around the stirring center axis 12. The fixed connection between the first crushing roller 21 and the annular internal gear ring 32 causes the first crushing roller 21 to drive the annular internal gear ring 32 to rotate around the stirring center axis 12. Since the mixing tank shell 10 and the upper bottom plate 31, as well as the annular internal gear ring 32 and the upper bottom plate 31, are fixedly connected, and the annular internal gear ring 32 and the first drive gear 33 are meshed, the first drive gear 33 rotates around the stirring center axis 12 while simultaneously rotating around its own axis under the drive of the annular internal gear ring 32. This, in turn, drives the first crushing roller 21 to rotate around the stirring center axis 12. As roller 21 rotates, the meshing connection between the first drive gear 33 and the second drive gear 34 causes the first drive gear 33 to drive the second drive gear 34 to rotate. The fixed connection between the second drive gear 34 and the second crushing roller 22 causes the second drive gear 34 to drive the second crushing roller 22 to rotate. Thus, under the action of the first drive gear 33 and the second drive gear 34, the first crushing roller 21 and the second crushing roller 22 rotate around their respective axes, and the rotation directions of the first crushing roller 21 and the second crushing roller 22 are opposite. Under the action of the first crushing roller 21 and the second crushing roller 22, the raw materials with larger particles are crushed, thereby making the raw materials more uniformly mixed and improving the product quality.

[0057] In one specific embodiment, please refer to the appendix. Figure 5 As shown, the diameter of the first drive gear 33 is larger than the diameter of the second drive gear 34.

[0058] In this embodiment, since the diameter of the first drive gear 33 is larger than the diameter of the second drive gear 34, the rotational speed of the second drive gear 34 is greater than the rotational speed of the first drive gear 33, which makes the rotational connection of the second crushing roller 22 greater than that of the first crushing roller 21, thereby improving the crushing effect of the particulate raw materials.

[0059] In one specific embodiment, please refer to the appendix. Figure 4As shown, the cleaning unit 40 includes a gas-liquid rotary joint 41 and a plurality of cleaning nozzles 42. The gas-liquid rotary joint 41 is mounted on the outside of the stirring center shaft 12 and located at the upper end of the linkage sealing plate 13. The plurality of cleaning nozzles 42 are evenly fixed at the lower end of the linkage sealing plate 13, and the input end of the cleaning nozzle 42 passes through the linkage sealing plate 13 and extends to the upper end of the linkage sealing plate 13. The output end of the gas-liquid rotary joint 41 and the cleaning nozzle 42 are connected by a hose, and the cleaning nozzle 42 corresponds to the pulverizing unit 20. In this embodiment, the cleaning nozzle 42 is preferably a rotary nozzle.

[0060] Furthermore, the cleaning nozzle 42 includes at least a housing, a rotating shaft, and a nozzle. The housing is fixed to the lower end of the linkage sealing plate 13, the rotating shaft is rotatably connected to the housing, and the nozzle is fixed to the outside of the rotating shaft. The cleaning nozzle 42 has a channel inside, which passes through the housing, the rotating shaft, and the nozzle. In this embodiment, the axis of the housing is perpendicular to the horizontal plane, the axis of the rotating shaft is parallel to the horizontal plane, and after the nozzle rotates, its rotation plane is perpendicular to the horizontal plane.

[0061] In this embodiment, there are at least two cleaning nozzles 42 corresponding to the same pulverizing section 20, and the two cleaning nozzles 42 correspond to the first pulverizing roller 21 and the second pulverizing roller 22 inside the same pulverizing section 20, respectively. The two cleaning nozzles 42 can respectively rinse the first pulverizing roller 21 and the second pulverizing roller 22 located inside the same pulverizing section 20.

[0062] Here, the gas-liquid rotary joint 41 is an existing mature technology. The gas-liquid rotary joint 41 includes at least a rotor module and a stator module. The rotor module is fixed to the outside of the stirring center shaft 12. The rotor module is provided with multiple water outlets, and the multiple water outlets and multiple cleaning nozzles 42 are connected one-to-one through hoses. The stator module is rotatably connected to the upper end of the rotor module. The stator module is provided with a water inlet, and the water inlet and the output end of the water supply module are connected through a cleaning pipe.

[0063] Specifically, rotary nozzles are a mature existing technology. They are nozzles that automatically rotate and spray around their axis by water pressure. In this embodiment, the cleaning nozzle 42 is modeled as "Keliying DG25". Of course, the above model is only for better describing the working process of this application and does not represent a specific limitation of this application document.

[0064] In this embodiment, after the device is used, the water supply module is activated, and high-pressure water is supplied to the gas-liquid rotary joint 41. After being diverted by the gas-liquid rotary joint 41, the water flows to the cleaning nozzle 42, which washes the inner wall of the mixing tank shell 10, the outer wall of the stirring center shaft 12, the outer wall of the transverse stirring arm 15, the outer wall of the first crushing roller 21, and the outer wall of the second crushing roller 22. The drive motor 11 is then activated, which drives the linkage sealing plate 13 to rotate. Since the cleaning nozzle 42 and the linkage sealing plate 13 are fixedly connected, the linkage sealing plate 13 drives the cleaning nozzle 42 to rotate, causing the nozzles on the cleaning nozzle 42 to rotate in a circular motion. While rotating around the rotating shaft, it also rotates around the stirring center shaft 12, thereby cleaning the inside of the mixing tank shell 10 and its internal components through the cleaning nozzle 42. This prevents the mixed raw materials from remaining inside the mixing tank shell 10 and its internal components. At the same time, when the cleaning nozzle 42 cleans the first crushing roller 21 and the second crushing roller 22, the first crushing roller 21 and the second crushing roller 22 can rotate around their respective axes with the cooperation of the drive motor 11 and the self-rotation drive unit 30. This allows the cleaning nozzle 42 to thoroughly rinse the first crushing roller 21 and the second crushing roller 22, improving the cleaning effect of the cleaning nozzle 42.

[0065] A method for using a building substrate preparation device, applicable to any of the above-mentioned structures of a device for preparing building substrates based on gasification slag, contaminated soil, and fly ash, mainly includes the following steps:

[0066] Stp1: The crushed industrial waste and other ingredients are fed into the mixing tank shell 10 in a suitable proportion through the feeding port 18;

[0067] Stp2: Start the drive motor 11, which drives the horizontal stirring arm 15 to rotate, so that the horizontal stirring arm 15 stirs the raw materials in the horizontal direction;

[0068] Stp3: The drive motor 11 drives the linkage sealing plate 13 to rotate, and the linkage sealing plate 13 drives the first crushing roller 21 and the second crushing roller 22 to rotate around the stirring center axis 12. This causes the first crushing roller 21 and the second crushing roller 22 to drive the first drive gear 33 and the second drive gear 34 to rotate around the stirring center axis 12, respectively. Since the first drive gear 33 and the annular internal gear ring 32 are meshed, the first drive gear 33 rotates around its own axis while rotating around the stirring center axis 12, and drives the second drive gear 34 to rotate. This causes the first crushing roller 21 and the second crushing roller 22 to rotate around the stirring center axis 12 while rotating around their respective axes. The cooperation of the first crushing roller 21 and the second crushing roller 22 crushes the raw materials with larger particles.

[0069] Stp4: After mixing and stirring are completed, the raw materials are discharged through the discharge port 17. The water supply module is started to deliver high-pressure water to the gas-liquid rotary joint 41. After the high-pressure water is split through the gas-liquid rotary joint 41, it flows into the cleaning nozzle 42 and cleans the inside of the mixing tank shell 10 and its internal components through the cleaning nozzle 42.

[0070] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An apparatus for preparing building materials based on gasification slag, contaminated soil, and fly ash, comprising a mixing tank shell (10), characterized in that: A drive motor (11) is fixed to the upper end of the mixing tank shell (10), and a stirring center shaft (12) is fixed to the output end of the drive motor (11). The mixing tank shell (10) and the stirring center shaft (12) are rotatably connected. A linkage sealing plate (13) is fixed to the outer side of the stirring center shaft (12), and the linkage sealing plate (13) is rotatably connected to the mixing tank shell (10). The mixing tank shell (10) also includes: Multiple crushing sections (20) are arranged in a ring at the lower end of the linkage sealing plate (13). Each crushing section (20) includes a first crushing roller (21) and a second crushing roller (22). Both the first crushing roller (21) and the second crushing roller (22) are rotatably connected to the lower end of the linkage sealing plate (13). Both the first crushing roller (21) and the second crushing roller (22) are provided with multiple annular grooves. A spiral stirring blade (23) is fixed on the second crushing roller (22) and located inside the annular groove. When the device is in working condition, the spiral stirring blade (23) and the first crushing roller (21) do not contact each other. A self-rotating drive unit (30) is assembled between the mixing tank shell (10) and the crushing unit (20). The self-rotating drive unit (30) includes an upper base plate (31), an annular internal gear ring (32), a plurality of first drive gears (33), and a plurality of second drive gears (34). The upper base plate (31) is fixed inside the mixing tank shell (10) and located at the upper end of the linkage sealing plate (13). The annular internal gear ring (32) is fixed at the lower end of the upper base plate (31). The first drive gear (33) is fixed to the upper end of a plurality of first crushing rollers (21). The first drive gear (33) is meshed with an annular internal gear ring (32). A plurality of second drive gears (34) are fixed to the upper end of a plurality of second crushing rollers (22). The first drive gear (33) and the second drive gear (34) located at the upper end of the same crushing section (20) are meshed. The diameter of the first drive gear (33) is larger than the diameter of the second drive gear (34). The mixing tank shell (10) is also equipped with a cleaning section (40), which includes a gas-liquid rotary joint (41) and multiple cleaning nozzles (42). The gas-liquid rotary joint (41) is mounted on the outside of the stirring center shaft (12) and located at the upper end of the linkage sealing plate (13). The multiple cleaning nozzles (42) are evenly fixed at the lower end of the linkage sealing plate (13). The gas-liquid rotary joint (41) and the cleaning nozzles (42) are connected by a hose. The cleaning nozzles (42) correspond to the pulverizing section (20). The cleaning nozzles (42) are rotary nozzles. When the device is in operation, the first crushing roller (21) and the second crushing roller (22) can rotate around their respective axes under the drive of the self-rotation drive unit (30), and the rotation directions of the first crushing roller (21) and the second crushing roller (22) are opposite.

2. The equipment for preparing building substrates based on gasification slag, contaminated soil, and fly ash according to claim 1, characterized in that: Multiple bushings (14) are fixed to the outside of the stirring center shaft (12), and multiple transverse stirring arms (15) are fixed to the outside of the bushings (14) and between two adjacent crushing sections (20).

3. A method of using a building substrate preparation device, applicable to the device for preparing building substrates based on gasification slag, contaminated soil, and fly ash as described in any one of claims 1-2, characterized in that: The main steps include: Step 1: Put the crushed industrial waste and other ingredients into the mixing tank shell (10); Step 2: Start the drive motor (11) and stir the raw materials in the horizontal direction through the horizontal stirring arm (15); Step 3: The first crushing roller (21) and the second crushing roller (22) crush the raw materials with larger particles through the self-rotation drive unit (30); Step 4: After mixing and stirring, unload the raw materials, supply water to the gas-liquid rotary joint (41), and clean the inside of the mixing tank shell (10) and its internal components through the cleaning nozzle (42).

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