A waste incineration slag resource utilization crushing device and a crushing method

Abstract

The application discloses a kind of waste incineration slag resource utilization crushing equipment and crushing method, including the tank for crushing slag, further comprising: screen plate, fixedly installed in the inside of tank, for carrying the slag added in tank;Pulverization component, set on tank and cooperate screen plate to carry out rolling pressure preliminary crushing to slag, so that the slag meeting the aperture of screen plate falls downwards;First magnetic component, set on screen plate, for adsorbing magnetic powder in the slag falling downwards;Air inlet component, set on tank, for sucking gas outside tank and blowing pulverized slag upwards along the height direction of tank.The purpose of the waste incineration slag resource utilization crushing equipment of the present application is to solve the problem that in the prior art, during the crushing process of most slag, the metal in the slag is also crushed, and the crushed metal is not conducive to screening, which leads to poor resource utilization effect.

Description

Technical Field

[0001] This invention relates to the field of waste incineration technology, specifically to a waste incineration slag resource utilization crushing equipment and crushing method. Background Technology

[0002] Waste incineration ash is a solid residue produced during the incineration process, mainly composed of slag, glass, ceramics, and metals. Traditional landfill methods not only occupy land but also pose a risk of heavy metal pollution. Resource utilization achieves circular value through pretreatment, metal recycling, building material conversion, and stabilization treatment: First, metals such as iron, copper, and aluminum are separated through processes such as screening, crushing, magnetic separation, and eddy current separation; the remaining inorganic components, after crushing and screening, can be used as concrete aggregate, roadbed materials, or brick-making raw materials. Existing technologies for forced slag crushing cannot distinguish between non-metallic slag components and metallic components, resulting in the pulverization of metals such as iron, copper, and aluminum along with the slag. The pulverized metals form fine fragments, similar in size to the slag particles, greatly increasing the difficulty of screening. These metal fragments are easily encapsulated by the slag, reducing sorting efficiency and increasing impurities in subsequent building material processing, affecting the quality of recycled products and ultimately leading to a decline in the resource utilization rate of slag. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that in most existing slag crushing processes, the metal in the slag is also crushed, and the crushed metal is not conducive to screening, resulting in poor resource utilization. Therefore, this invention proposes a crushing device and crushing method for the resource utilization of waste incineration slag.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A waste incinerator slag resource utilization crushing device includes a tank for crushing slag, and further includes: Mesh plate, fixedly installed on the inside of the tank, is used to hold the slag added into the tank; The crushing component is set on the tank and works with the screen to crush the slag, so that the slag that fits the mesh size of the screen falls downwards. The first magnetic component, set on the mesh plate, is used to adsorb magnetic powder in the downward falling slag. An air intake assembly, located on the tank body, is used to draw in gas from outside the tank body and blow the crushed slag upwards along the height of the tank body. The collecting component is installed on and connected to the tank body, and is used for secondary collection of magnetic powder in slag powder and discharge of slag to the outside of the tank body.

[0005] A further improvement of the present invention is that the pulverizing component includes: The drive motor is fixedly installed on the surface of the tank, and its output end extends through and into the inside of the tank. The drive rod is fixedly installed on the output end of the drive motor and passes through the mesh plate; The crushing component is located outside the drive rod and is in contact with the slag falling onto the screen plate. It can rotate on the surface of the screen plate under the drive rod to crush the slag.

[0006] A further improvement of the present invention is that the crushing component comprises: The connecting sleeve is fixedly installed on the outside of the drive rod; There are no fewer than four connecting rods, which are distributed in a ring at equal intervals on the outside of the connecting sleeve, wherein the connecting rods are arranged parallel to each other with the mesh plate; Vertical rods are fixedly installed on the outside of the connecting rods and are perpendicular to the mesh panel. There are several vertical rods. The rolling roller is rotatably connected between two adjacent vertical rods and can rotate axially between the two adjacent vertical rods. The outer surface of the rolling roller is in contact with the surface of the screen.

[0007] A further improvement of the present invention is that the crushing component further includes a shearing component, the shearing component comprising: The movable blade is fixedly installed on the outside of the drive rod, located on the outside of the mesh plate; The connecting ring is fixedly installed on the inside of the tank body and is coaxial with the tank body. Fixed blades are fixedly installed on the inner side of the connecting ring. Several of them are provided and are in contact with one side surface of the movable blade. The movable blades further crush the slag that has fallen to the bottom of the tank by shearing with the fixed blades.

[0008] A further improvement of the present invention is that the first magnetic component comprises: The connecting column is fixedly installed on the surface of the mesh plate and located between the mesh plate and the movable blade; The first annular electromagnet is fixedly installed on the other end of the connecting column and located outside the drive rod.

[0009] A further improvement of the present invention is that the air intake assembly is a fan-blade air intake component, and the fan-blade air intake component includes: The shell is fixedly mounted on the tank, with the end of the drive rod away from the drive motor passing through and extending into the inside of the shell. The axial fan blades are fixedly installed on the outside of the drive rod and located on the inside of the housing, and can rotate together with the drive rod. An air inlet is formed on the surface of the housing, through which air from outside the housing can enter the inside of the housing under the rotational force of the axial fan blades. The vent pipe has one end connected to the shell and the other end connected to the tank. There are several vent pipes arranged in a ring at equal intervals.

[0010] A further improvement of the present invention is that the air intake assembly is a pump body air intake component, and the pump body air intake component includes: An air pump is fixedly installed on the outside of the tank, and its outlet end is connected to an output pipe. An annular tube is fixedly installed on the outside of the tank body. It is arranged in an annular shape and is coaxial with the tank body. An air passage is provided inside the annular tube, and the other end of the output tube is connected to the air passage. The air outlets are located on the surface of the annular tube. There are several outlets in the annular tube, and they are evenly distributed in a ring. The outlet end of the air outlet faces one side of the mesh plate.

[0011] A further improvement of the present invention is that the collecting component comprises: An annular seat is fixedly installed on the outside of the tank and communicates with the internal area of ​​the tank. The second electromagnet is fixedly installed on the inside of the ring seat; A magnetic powder collection container is fixedly installed on the outside of the container body; The airflow tube is connected at one end to the annular seat and at the other end to the magnetic powder collection tank. The slag discharge pipe is connected to the gas flow pipe at one end and to the bag filter at the other end via a flange. The sealing component is installed inside the slag discharge pipe. It is used to control the air pressure inside the tank so that the airflow can carry the powder upward to float. The solenoid valve is installed on the gas flow pipe between the slag discharge pipe and the magnetic powder collection tank.

[0012] A further improvement of the present invention is that the sealing component comprises: A cross-shaped mounting bracket is fixedly installed on the inside of the slag discharge pipe; The movable rod passes through the center of the cross-shaped mounting bracket and is slidably connected to the cross-shaped mounting bracket. A sealing plate is fixedly installed at the end of the movable rod and is used to seal the end of the slag discharge pipe; The elastic element, located between the cross mounting bracket and the sealing plate and on the outside of the movable rod, is used to pull the sealing plate toward the opening of the slag discharge pipe to seal the opening of the slag discharge pipe, thereby ensuring the gas pressure inside the tank.

[0013] A method for crushing and recycling waste incinerator slag for resource utilization, the method being based on the aforementioned waste incinerator slag crushing and recycling equipment, comprising: The slag is fed into the tank; The slag first falls onto the screen plate, and the crushing component contacts the surface of the screen plate. During the rotation, the slag is initially crushed by rolling and crushing. When the slag particles are crushed to a size smaller than the screen plate aperture, they fall downwards. During the slag falling process, the first magnetic component located below the mesh plate is energized to generate a magnetic field, which adsorbs the magnetic powder mixed in the slag. In addition, the crushing component performs secondary crushing on the larger slag particles that fall to the bottom of the tank to ensure that all slag is fully refined. Meanwhile, the crushing component extends into the air intake component, sending external air into the bottom of the tank. The airflow flows upward along the height of the tank, forming a gas-solid two-phase flow, thereby achieving density separation of metals and non-metals. When the gas flow carrying non-metallic powder rises to the collecting component, it further adsorbs the residual magnetic powder. When the gas pressure inside the tank increases due to the continuous injection of gas flow to overcome the elastic force, the slag powder undergoes the final gas-solid separation. After all the slag has been collected, the magnetic powder enters the collecting component with the airflow. After the equipment has finished running, the collected metal powder is cleaned up.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: This invention achieves multi-stage crushing of slag by using a mesh plate and a crushing component. The slag is first initially crushed by the rolling crushing component on the mesh plate; particles smaller than the mesh aperture fall off. Larger particles are then subjected to secondary crushing at the bottom of the tank. The entire crushing process is continuous within the tank, starting from the slag's entry and proceeding through initial crushing, magnetic powder adsorption, and secondary crushing. This eliminates the need for frequent shutdowns for intermediate processing, significantly improving production efficiency and reducing costs, making it suitable for large-scale waste incineration slag treatment. During the slag's fall, a magnetic field is generated by energizing a first magnetic component to adsorb magnetic powder mixed in the slag. Further adsorption of residual magnetic powder occurs as the airflow rises to the collection component. The crushing component extends into the air inlet component, drawing in external air to form a gas-solid two-phase flow at the bottom of the tank, achieving density separation of metals and non-metals. As the airflow rises, the pressure inside the tank increases to overcome elastic forces, achieving final gas-solid separation of the slag powder. The magnetic powder enters the collection component with the airflow, and the collected metal powder is cleaned up after the equipment finishes operating.

[0015] Furthermore, the mesh plate and crushing component work together to achieve initial crushing. By controlling the size of the slag falling through the mesh plate aperture, the metal is prevented from being over-crushed, allowing larger metal particles to remain above the mesh plate and reducing the generation of fine metal debris. The first magnetic component instantly adsorbs magnetic powder during the slag falling process, initially separating magnetic metals and reducing the load on subsequent processing. The air intake component blows the crushed slag upwards, using the density difference between metal and non-metal slag to achieve secondary separation. Metals, due to their higher density, are less easily blown away, reducing the likelihood of them being encapsulated by the slag. The collection component performs secondary collection of magnetic powder, further improving the metal recovery rate, while reducing the content of metal impurities in subsequent building material processing, improving the quality of recycled products, and ultimately increasing the resource utilization rate of slag. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall connection structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the connection structure between the magnetic powder collection tank and the door of the present invention; Figure 3 This is a schematic diagram of the connection structure between the airflow pipe and the sealing component of the present invention; Figure 4 This is a schematic diagram of the overall cross-sectional connection structure of Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the overall connection structure of the crushing component of the present invention; Figure 6 This is a schematic diagram of the overall cross-sectional connection structure of Embodiment 3 of the present invention; Figure 7 This is a top view schematic diagram of the connection structure between the annular tube and the air outlet of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Tank body; 2. Mesh plate; 3. Crushing assembly; 31. Drive motor; 32. Drive rod; 33. Crushing component; 331. Connecting sleeve; 332. Connecting rod; 333. Vertical rod; 334. Crushing roller; 34. Shearing component; 341. Movable blade; 342. Connecting ring; 343. Fixed blade; 4. First magnetic component; 41. Connecting column; 42. First annular electromagnet; 5. Air intake assembly; 51. Fan blade air intake component; 511. Shell; 512. Axial flow fan blade; 513. Air intake 514. Outlet pipe; 52. Pump body inlet component; 521. Air pump; 522. Output pipe; 523. Annular pipe; 524. Outlet hole; 6. Collection component; 61. Annular seat; 62. Second electromagnet; 63. Magnetic powder collection tank; 64. Airflow pipe; 65. Slag discharge pipe; 66. Sealing component; 661. Cross mounting bracket; 662. Movable rod; 663. Sealing plate; 664. Elastic element; 67. Solenoid valve; 7. Feed pipe; 8. Sealing cover; 9. Door. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] Example 1 like Figures 1-5As shown, the present invention provides a waste incinerator slag resource utilization crushing device, including a tank 1 for crushing slag, and further comprising: Mesh plate 2 is fixedly installed on the inside of tank 1 to carry the slag added into tank 1; The crushing component 3 is set on the tank body 1 and works with the screen plate 2 to crush the slag in the initial crushing, so that the slag that conforms to the aperture of the screen plate 2 falls downward. The first magnetic component 4 is disposed on the mesh plate 2 and is used to adsorb magnetic powder in the slag falling downwards. The air intake assembly 5 is installed on the tank body 1 and is used to draw in the gas outside the tank body 1 and blow the crushed slag upward along the height direction of the tank body 1. The collecting component 6 is installed on and connected to the tank body 1, and is used to collect the magnetic powder in the slag powder and discharge the slag to the outside of the tank body 1.

[0029] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 , Figure 4 As shown; the crushing component 3 includes: The drive motor 31 is fixedly installed on the surface of the tank 1, and its output end extends through and into the inside of the tank 1. The drive rod 32 is fixedly installed on the output end of the drive motor 31 and passes through the mesh plate 2; The crushing component 33 is located on the outside of the drive rod 32 and is in contact with the slag falling on the screen plate 2. Under the drive of the drive rod 32, it can rotate on the surface of the screen plate 2 to crush the slag. The drive motor 31 drives the drive rod 32 to rotate, and the drive rod 32 drives the crushing component 33 to rotate on the surface of the screen plate 2. The crushing action during the rotation process initially crushes the slag on the screen plate 2, so that the slag that conforms to the aperture of the screen plate 2 falls downward.

[0030] In a preferred embodiment, the present invention may be further configured as follows: Figure 4 , Figure 5 As shown; the crushing component 33 includes: Connecting sleeve 331 is fixedly installed on the outside of drive rod 32; There are at least four connecting rods 332, which are distributed in a ring at equal intervals on the outside of the connecting sleeve 331, wherein the connecting rods 332 are arranged parallel to each other with the mesh plate 2; Vertical rods 333 are fixedly installed on the outside of connecting rods 332 and are perpendicular to each other with the mesh plate 2. There are several vertical rods 333. The crushing roller 334 is rotatably connected between two adjacent vertical rods 333. It can rotate axially between the two adjacent vertical rods 333. The outer surface of the crushing roller 334 is in contact with the surface of the screen plate 2. The connecting sleeve 331 rotates with the drive rod 32, which drives the connecting rod 332 and the vertical rods 333 to rotate together. The crushing roller 334 between the adjacent vertical rods 333 rotates axially when it is in contact with the surface of the screen plate 2. The slag on the screen plate 2 is crushed by rolling and crushing.

[0031] In a preferred embodiment, the present invention may be further configured as follows: Figure 4 , Figure 5 As shown; the crushing component 33 also includes a shearing component 34, which includes: The movable blade 341 is fixedly installed on the outside of the drive rod 32, and it is located on the outside of the mesh plate 2; The connecting ring 342 is fixedly installed on the inner side of the tank body 1, and is coaxial with the tank body 1; Fixed blades 343 are fixedly installed on the inner side of connecting ring 342. Several of them are provided and are in contact with one side surface of movable blade 341. Movable blade 341 shears with fixed blade 343 to further crush the slag that has fallen to the bottom of tank 1. When drive rod 32 rotates, it drives movable blade 341 to rotate. Movable blade 341 and fixed blade 343 on the inner side of connecting ring 342 come into contact with each other. Through the shearing action between the two, the slag that has fallen to the bottom of tank 1 is further crushed.

[0032] In a preferred embodiment, the present invention may be further configured as follows: Figure 4 As shown; the first magnetic component 4 includes: The connecting column 41 is fixedly installed on the surface of the mesh plate 2 and located between the mesh plate 2 and the movable blade 341; The first annular electromagnet 42 is fixedly installed on the other end of the connecting column 41 and located outside the drive rod 32. The first annular electromagnet 42 is installed on the mesh plate 2 through the connecting column 41. After being energized, it generates magnetism and adsorbs the magnetic powder contained in the slag falling from the mesh plate 2, thereby achieving the initial separation of magnetic metals.

[0033] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 , Figure 4 As shown; the intake assembly 5 is a fan-blade intake component 51, which includes: The housing 511 is fixedly installed on the tank 1, wherein the end of the drive rod 32 away from the drive motor 31 passes through and extends to the inside of the housing 511. Axial fan blade 512 is fixedly installed on the outside of drive rod 32 and located on the inside of housing 511, and can rotate together with drive rod 32. An air inlet 513 is provided on the surface of the housing 511, wherein air outside the housing 511 can enter the inside of the housing 511 through the air inlet 513 under the rotational force of the axial fan blade 512. The exhaust pipe 514 is connected at one end to the shell 511 and at the other end to the tank 1. There are several exhaust pipes 514 arranged in a ring and equidistantly. When the drive rod 32 rotates, it drives the axial flow fan blade 512 to rotate inside the shell 511. External air is drawn into the shell 511 through the air inlet 513 and then enters the tank 1 through the exhaust pipe 514, blowing the crushed slag upward along the height direction of the tank 1.

[0034] In a preferred embodiment, the present invention may be further configured as follows: Figure 2 , Figure 4 As shown; the collecting component 6 includes: The annular seat 61 is fixedly installed on the outside of the tank body 1 and communicates with the internal area of ​​the tank body 1. The second electromagnet 62 is fixedly installed on the inner side of the ring seat 61; A magnetic powder collection container 63 is fixedly installed on the outside of the container body 1; The airflow pipe 64 is connected at one end to the annular seat 61 and at the other end to the magnetic powder collection tank 63. The slag discharge pipe 65 is connected to the gas flow pipe 64 at one end and to the bag filter at the other end through a flange. The sealing component 66 is located inside the slag discharge pipe 65 and is used to control the air pressure inside the tank 1 so that the airflow can carry the powder upward to float. Solenoid valve 67 is installed on airflow pipe 64 between slag discharge pipe 65 and magnetic powder collection tank 63. Second electromagnet 62 generates magnetism in annular seat 61, adsorbing magnetic powder floating in slag. Airflow carries powder through airflow pipe 64. Solenoid valve 67 controls the direction of airflow, allowing magnetic powder to enter magnetic powder collection tank 63. Sealing component 66 controls the air pressure inside tank 1 to ensure that airflow carries powder to float. Slag is discharged through slag discharge pipe 65 to bag filter.

[0035] In a preferred embodiment, the present invention may be further configured as follows: Figure 3 , Figure 4 As shown; the sealing component 66 includes: The cross-shaped mounting bracket 661 is fixedly installed on the inside of the slag discharge pipe 65; The movable rod 662 passes through the center of the cross mounting bracket 661 and is slidably connected to the cross mounting bracket 661. A sealing plate 663 is fixedly installed at the end of the movable rod 662 and is used to seal the end of the slag discharge pipe 65; The elastic element 664 is located between the cross mounting bracket 661 and the sealing plate 663 and outside the movable rod 662. It is used to pull the sealing plate 663 toward the opening of the slag discharge pipe 65 to block the opening of the slag discharge pipe 65, thereby ensuring the air pressure inside the tank 1. The elastic element 664 pulls the sealing plate 663, causing it to move along the movable rod 662 toward the opening of the slag discharge pipe 65 to block the opening and maintain the air pressure inside the tank 1. When the air pressure reaches a certain level, the sealing plate 663 is pushed open, and the slag can be discharged.

[0036] In a preferred embodiment, the present invention may be further configured as follows: Figure 1 , Figure 2 As shown; the tank body 1 is also connected to the feed pipe 7, and the feed pipe 7 is hinged to the sealing cover 8. The magnetic powder collection tank 63 is also hinged to the door 9. Slag is added into the tank body 1 through the feed pipe 7. Closing the sealing cover 8 can prevent dust from overflowing during the crushing process. Opening the door 9 on the magnetic powder collection tank 63 can clean the collected magnetic powder.

[0037] Example 2 like Figures 1-5 As shown, the present invention provides a method for crushing waste incinerator slag for resource utilization, comprising: The slag is fed into tank 1; The slag first falls onto the screen plate 2. The crushing component 3 contacts the surface of the screen plate 2 and performs initial crushing of the slag by rolling and crushing during the rotation. When the slag particles are crushed to a size smaller than the aperture of the screen plate 2, they fall downwards. During the slag falling process, the first magnetic component 4 located below the mesh plate 2 is energized to generate a magnetic field, which adsorbs the magnetic powder mixed in the slag. In addition, the crushing component 3 performs secondary crushing on the larger slag particles that fall to the bottom of the tank 1 to ensure that all slag is fully refined. Meanwhile, the crushing component 3 extends into the air intake component 5, sending external air into the bottom of the tank 1. The airflow flows upward along the height direction of the tank 1, forming a gas-solid two-phase flow, thereby achieving density separation of metals and non-metals. When the gas flow carrying non-metallic powder rises to the collecting component 6, it further adsorbs the residual magnetic powder. When the gas pressure inside the tank 1 increases due to the continuous injection of gas flow to overcome the elastic force, the slag powder undergoes the final gas-solid separation. After all the slag has been collected, the magnetic powder enters the collecting component 6 with the airflow. After the equipment has finished running, the collected metal powder is cleaned up.

[0038] More specifically, the slag enters the tank 1 through the feed pipe 7. The sealing cover 8 needs to be opened when feeding and closed after feeding to prevent dust from overflowing. The slag first falls onto the mesh plate 2. After the drive motor 31 starts, it drives the drive rod 32 to rotate. The connecting sleeve 331 on the drive rod 32 rotates accordingly, causing the connecting rod 332 and the vertical rod 333 to make a circular motion around the drive rod 32. The crushing roller 334 between the vertical rods 333 contacts the surface of the mesh plate 2. During the rotation, the slag is initially crushed by rolling and crushing. When the slag particles are crushed to a size smaller than the aperture of the mesh plate 2, they will fall downwards. During the slag falling process, the first annular electromagnet 42 located below the mesh plate 2 is energized to generate a magnetic field, which adsorbs magnetic powder such as iron filings mixed in the slag, realizing the initial separation of magnetic metals. In addition, the drive rod 32 drives the movable blade 341 to rotate, forming a shearing action with the fixed blade 343 fixed on the connecting ring 342, which performs secondary crushing on the larger slag particles that fall to the bottom of the tank 1, ensuring that all slag is fully refined. At the same time, the part of the drive rod 32 extending into the housing 511 drives the axial flow fan blade 512 to rotate, drawing in external air through the air inlet 513 and sending it into the bottom of the tank 1 through the air outlet 514. The airflow flows upward along the height direction of the tank 1, forming a gas-solid two-phase flow. Since the metal particles have a higher density, such as copper and aluminum, they settle quickly in the airflow, while the lighter non-metallic slag is carried upward by the airflow, thereby achieving density separation of metals and non-metals. When the airflow carrying non-metallic powder rises to the annular seat 61, the second electromagnet 62 further adsorbs the remaining magnetic powder, enhancing the metal recovery effect. Subsequently, the airflow carrying the remaining powder flows through the airflow pipe 64 into the bag filter, while the sealing member 66 at the slag discharge pipe 65 maintains the sealing plate 663 at the pipe opening through the tension of the elastic member 664. When the gas pressure in the tank 1 rises to overcome the elastic force due to the continuous injection of airflow, the sealing plate 663 is pushed open, and the slag powder enters the bag filter for final gas-solid separation. When all the slag enters the bag filter, the first annular electromagnet 42 and the second electromagnet 62 are no longer energized. The solenoid valve 67 is opened, and the magnetic powder enters the magnetic powder collection tank 63 with the airflow. After the equipment has finished running, the collected metal powder can be cleaned by opening the door 9 of the magnetic powder collection tank 63. Through the synergistic effect of multi-stage crushing, multi-level magnetic separation, airflow density separation and secondary crushing, this equipment effectively solves the screening problem caused by excessive metal crushing in traditional processes, and significantly improves the metal recovery rate and slag resource utilization rate.

[0039] Example 3 The difference from Example 1 is as follows: Figure 6 , Figure 7 As shown; the air intake assembly 5 is the pump body air intake component 52, which includes: The air pump 521 is fixedly installed on the outside of the tank 1, and its outlet end is connected to the output pipe 522. The annular tube 523 is fixedly installed on the outside of the tank 1. It is arranged in annular shape and coaxial with the tank 1. The annular tube 523 has an air passage inside, and the other end of the output tube 522 is connected to the air passage. A number of air outlets 524 are provided on the surface of the annular tube 523 and are distributed in a ring at equal intervals. The air outlet end of the air outlet 524 faces one side of the mesh plate 2. When the air pump 521 operates, it sends gas into the air passage of the annular tube 523 through the output pipe 522. The gas is ejected from the air outlets 524 on the surface of the annular tube 523 and blows the slag upward toward one side of the mesh plate 2.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A waste incinerator slag resource utilization crushing device, comprising a tank (1) for crushing slag, characterized in that, Also includes: Mesh plate (2) is fixedly installed on the inside of tank (1) to carry the slag added into tank (1); The crushing component (3) is set on the tank (1) and works with the mesh plate (2) to crush the slag and make the slag that conforms to the mesh plate (2) fall downwards; The first magnetic component (4) is set on the mesh plate (2) and is used to adsorb magnetic powder in the slag falling downwards; The air intake assembly (5) is installed on the tank (1) and is used to draw in the gas outside the tank (1) and blow the crushed slag upward along the height direction of the tank (1); The collecting component (6) is installed on the tank (1) and connected to the tank (1) for secondary collection of magnetic powder in slag powder and discharge of slag to the outside of the tank (1).

2. The waste incinerator slag resource utilization crushing equipment according to claim 1, characterized in that, The crushing component (3) includes: The drive motor (31) is fixedly installed on the surface of the tank (1), and its output end extends through and into the inside of the tank (1). The drive rod (32) is fixedly installed on the output end of the drive motor (31) and passes through the mesh plate (2); The crushing component (33) is located outside the drive rod (32) and in contact with the slag falling onto the screen plate (2). It can rotate on the surface of the screen plate (2) under the drive rod (32) to crush the slag.

3. The waste incinerator slag resource utilization crushing equipment according to claim 2, characterized in that, The crushing component (33) includes: The connecting sleeve (331) is fixedly installed on the outside of the drive rod (32); There are at least four connecting rods (332) that are distributed in a ring at equal intervals on the outside of the connecting sleeve (331), wherein the connecting rods (332) and the mesh plate (2) are arranged parallel to each other; Vertical rods (333) are fixedly installed on the outside of connecting rods (332) and are perpendicular to each other with the mesh plate (2). The number of vertical rods (333) is set to a certain number. The rolling roller (334) is rotatably connected between two adjacent vertical rods (333), and it can rotate axially between the two adjacent vertical rods (333). The outer surface of the rolling roller (334) is in contact with the surface of the screen plate (2).

4. The waste incinerator slag resource utilization crushing equipment according to claim 2, characterized in that, The crushing component (33) further includes a shearing component (34), which includes: The movable blade (341) is fixedly installed on the outside of the drive rod (32), and it is located on the outside of the mesh plate (2); The connecting ring (342) is fixedly installed on the inner side of the tank (1) and is coaxial with the tank (1); Fixed blades (343) are fixedly installed on the inner side of the connecting ring (342). Several of them are provided and they are in contact with one side surface of the movable blade (341). The movable blade (341) shears the slag that has fallen to the bottom of the tank (1) through the shearing between it and the fixed blade (343).

5. The waste incinerator slag resource utilization crushing equipment according to claim 4, characterized in that, The first magnetic component (4) includes: The connecting column (41) is fixedly installed on the surface of the mesh plate (2) and located between the mesh plate (2) and the movable blade (341); The first annular electromagnet (42) is fixedly installed on the other end of the connecting column (41) and located outside the drive rod (32).

6. The waste incinerator slag resource utilization crushing equipment according to claim 2, characterized in that, The air intake assembly (5) is a fan blade air intake component (51), which includes: The housing (511) is fixedly installed on the tank (1), wherein the end of the drive rod (32) away from the drive motor (31) passes through and extends to the inside of the housing (511). The axial fan blade (512) is fixedly installed on the outside of the drive rod (32) and located on the inside of the housing (511), and it can rotate together with the drive rod (32). An air inlet (513) is provided on the surface of the housing (511), wherein air outside the housing (511) can enter the inside of the housing (511) through the air inlet (513) under the rotational force of the axial fan blades (512); The vent pipe (514) is connected at one end to the shell (511) and at the other end to the tank (1). The number of vent pipes (514) is set in a ring and is evenly distributed.

7. The waste incinerator slag resource utilization crushing equipment according to claim 1, characterized in that, The air intake assembly (5) is a pump body air intake component (52), which includes: An air pump (521) is fixedly installed on the outside of the tank (1), and its outlet end is connected to an output pipe (522). The annular tube (523) is fixedly installed on the outside of the tank (1). It is arranged in an annular shape and is coaxial with the tank (1). The annular tube (523) has an air passage inside, and the other end of the output tube (522) is connected to the air passage. A number of air outlets (524) are provided on the surface of the annular tube (523) and are distributed in an annular shape at equal intervals. The air outlet end of the air outlet (524) faces one side of the mesh plate (2).

8. The waste incinerator slag resource utilization crushing equipment according to claim 1, characterized in that, The collecting component (6) includes: The annular seat (61) is fixedly installed on the outside of the tank (1) and communicates with the internal area of ​​the tank (1); The second electromagnet (62) is fixedly installed on the inner side of the ring seat (61); A magnetic powder collection container (63) is fixedly installed on the outside of the container body (1); The airflow pipe (64) is connected to the annular seat (61) at one end and to the magnetic powder collection tank (63) at the other end. The slag discharge pipe (65) is connected to the gas flow pipe (64) at one end and to the bag filter at the other end through a flange. A sealing component (66) is installed inside the slag discharge pipe (65) to control the air pressure inside the tank (1) so that the airflow can carry the powder upward to float. The solenoid valve (67) is installed on the airflow pipe (64) between the slag discharge pipe (65) and the magnetic powder collection tank (63).

9. The waste incinerator slag resource utilization crushing equipment according to claim 8, characterized in that, The sealing component (66) includes: A cross-shaped mounting bracket (661) is fixedly installed on the inside of the slag discharge pipe (65); The movable rod (662) passes through the center of the cross mounting bracket (661) and is slidably connected to the cross mounting bracket (661); A sealing plate (663) is fixedly installed at the end of the movable rod (662) and is used to seal the end of the slag discharge pipe (65); The elastic element (664) is located between the cross mounting bracket (661) and the sealing plate (663) and outside the movable rod (662). It is used to pull the sealing plate (663) toward the opening of the slag discharge pipe (65) to block the opening of the slag discharge pipe (65) and thus ensure the air pressure inside the tank (1).

10. A method for crushing waste incinerator slag for resource utilization, characterized in that, This method is based on a waste incinerator slag resource utilization crushing device according to any one of claims 1 to 9, comprising: The slag is fed into the tank (1); The slag first falls onto the mesh plate (2), and the crushing component (3) contacts the surface of the mesh plate (2). During the rotation, the slag is initially crushed by rolling and crushing. When the slag particles are crushed to a size smaller than the mesh plate (2) aperture, they fall downwards. During the slag falling process, the first magnetic component (4) located below the mesh plate (2) is energized to generate a magnetic field, which adsorbs the magnetic powder mixed in the slag. In addition, the crushing component (3) performs secondary crushing on the larger slag particles that fall to the bottom of the tank (1) to ensure that all slag is fully refined. At the same time, the crushing component (3) extends into the air intake component (5) to send external air into the bottom of the tank (1). The airflow flows upward along the height direction of the tank (1) to form a gas-solid two-phase flow, thereby realizing the density separation of metals and non-metals. When the airflow carrying non-metallic powder rises to the collecting component (6), it further adsorbs the residual magnetic powder. When the air pressure in the tank (1) increases due to the continuous injection of airflow to overcome the elastic force, the slag powder undergoes final gas-solid separation. After all the slag is collected, the magnetic powder enters the collecting component (6) with the airflow. After the equipment is finished running, the collected metal powder is cleaned up.

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