Sintering wet fuel sorting system
By combining the air supply mechanism and the material sorting mechanism, multi-stage fluidized separation and precise grading of sintered wet fuel are achieved, solving the problems of low sorting efficiency and clogging in existing equipment and improving fuel utilization efficiency.
Patent Information
- Application Number
- CN202423091121.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing fuel sorting devices have difficulty accurately controlling the sorting efficiency of sintered wet fuel with particles smaller than 0.5 mm, resulting in low fuel utilization efficiency. Furthermore, existing devices are prone to clogging of screen holes, with a sorting efficiency of less than 50%.
It employs an air supply mechanism and a material sorting mechanism, including a vibrating conveyor mechanism, a multi-stage sorting unit, a material dispersing unit, a material blocking and impacting unit, and an air hood. Through a combination of vibration and air separation, multi-stage sorting is carried out to achieve fluidized separation and precise grading of fuel.
It improves the sorting efficiency of sintered wet fuel, fully separates materials smaller than 0.5 mm, solves the problem of low fuel utilization efficiency, and reduces the risk of equipment blockage.
Smart Images
Figure CN223761509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of raw material preparation technology in the iron and steel metallurgical industry, and in particular, to a sintering wet fuel sorting system. Background Technology
[0002] Solid fuel is one of the main fuels used in metallurgical sintering processes and is also a major source of carbon emissions in the iron and steel metallurgical industry. The particle size distribution of sintered solid fuel is an important parameter affecting the sintering effect. The particle size of the fuel coal used in sintering machines must be limited to a certain range, with a suitable particle size between 0.5 mm and 3 mm. Both excessively coarse and excessively fine solid fuel particles (less than 0.5 mm or greater than 3 mm) will significantly impact fuel utilization efficiency and the performance parameters of the sintered ore. Therefore, during the sintering process, it is generally required to control the fuel particle size within the range of 0.5 to 3 mm.
[0003] However, existing one- or two-stage fuel crushing processes lack fine particle sorting devices, making it difficult to accurately control the lower limit of fuel size. This results in the proportion of particles smaller than 0.5 mm (-0.5 mm) in the solid fuel sent to the sintering batching chamber after four-roll crushing reaching over 30%. Furthermore, due to the requirements of the sintering production process and fuel performance, existing sorting devices on the market are unable to meet the requirements for sorting sintering fuel with a particle size of around 0.5 mm. The main reasons are twofold: firstly, sintering solid fuels have high moisture content (generally 7-10%, but can reach 13% or even 15% in special cases), small particle size differences (full particle size distribution within the 0-5 mm range), and high output (the consumption of solid fuel in a 360 m² sintering machine is approximately 25 t / h). This makes existing screening devices prone to clogging during operation, resulting in screening efficiency of less than 50%. Secondly, the sintering production process has high requirements for fuel performance parameters, including moisture content. Using wet screening or drying followed by screening not only consumes a lot of energy but also makes it difficult to meet the requirements for the finished product.
[0004] Therefore, under the "dual carbon" background, in order to reduce solid energy consumption by starting with the fuel supply method and promote the low-carbon development of the sintering industry, it is necessary to develop a sorting device suitable for sintering solid fuels with high humidity and small particle size. This device can strictly control the proportion of fuel with particle size smaller than 0.5mm according to the production process requirements, thereby improving fuel utilization efficiency and further achieving the goal of "energy saving and consumption reduction". Utility Model Content
[0005] The sintering wet fuel sorting system provided by this utility model solves the technical problem that existing fuel sorting devices lack dispersion of sintering wet fuel, resulting in poor sorting efficiency of sintering wet fuel.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A sintering wet fuel sorting system includes an air supply mechanism and a material sorting mechanism. The material sorting mechanism includes a base frame, a vibrating conveyor mechanism, a multi-stage sorting unit, a material dispersing unit, a material blocking and impacting unit, and an air hood. The multi-stage sorting unit is fixedly arranged on the vibrating conveyor mechanism. The air hood is installed on the base frame and encloses the multi-stage sorting unit to form an air separation chamber. The air hood is provided with a material inlet, a dust outlet, and a discharge port in sequence. The air supply mechanism is located on the base frame and below the multi-stage sorting unit. The material dispersing unit is located at the head of the multi-stage sorting unit. The material blocking and impacting unit is located above the multi-stage sorting unit and downstream of the material dispersing unit.
[0008] Furthermore, the multi-stage sorting unit includes a fabric dispersing and conveying assembly, a primary sorting and conveying assembly, a secondary sorting and conveying assembly, and a tertiary sorting and discharging assembly arranged sequentially along the conveying direction. The fabric dispersing and conveying assembly, the primary sorting and conveying assembly, the secondary sorting and conveying assembly, and the tertiary sorting and discharging assembly are all fixedly mounted on the vibrating conveying mechanism. The material inlet is located on the upper input side of the fabric dispersing and conveying assembly. The fabric dispersing and conveying assembly includes a fabric conveying plate and a conveying dispersing plate arranged sequentially along the conveying direction. The material inlet is located above the fabric conveying plate. The conveying dispersing plate is arranged downwardly along the conveying direction between the fabric conveying plate and the secondary sorting assembly. The fabric dispersing unit is located on the back of the conveying dispersing plate.
[0009] Furthermore, the primary sorting and conveying assembly includes a primary air distribution plate and a primary rectifier grid arranged sequentially along the conveying direction. The primary air distribution plate is arranged horizontally, and the primary rectifier grid is arranged downwardly along the conveying direction between the primary air distribution plate and the secondary sorting and conveying assembly. The primary air distribution plate is a double-layer perforated plate.
[0010] Furthermore, the primary air distribution plate includes air caps and upper and lower plates arranged at intervals along the height direction. The air caps are fixedly installed between the upper and lower plates, and multiple air caps are arranged in an array. The air caps are provided with air distribution holes.
[0011] Furthermore, the secondary sorting component includes a secondary air distribution plate and a secondary rectifier grid arranged sequentially along the conveying direction. The secondary rectifier grid is arranged at a downward angle along the conveying direction between the secondary air distribution plate and the tertiary sorting discharge component.
[0012] Furthermore, the three-stage sorting and discharge assembly includes a three-stage air distribution plate and a discharge conveying plate arranged sequentially along the conveying direction. The discharge conveying plate is located downstream of the three-stage air distribution plate and extends out of the air separation chamber to communicate with the discharge port.
[0013] Furthermore, the air hood includes an upper hood and a lower hood. The lower hood is fixedly mounted on the vibrating conveyor mechanism and covers the multi-stage sorting unit. The upper hood is fixedly mounted on the base frame and presses over the lower hood. The upper hood and the lower hood are sealed and connected by a corrugated rubber sleeve. The upper hood and the lower hood together with the multi-stage sorting unit form an air separation chamber.
[0014] Furthermore, the material blocking and impacting unit includes a primary material blocking component and a secondary material blocking component. Both the primary and secondary material blocking components are located on the upper cover and within the air separation chamber. The primary material blocking component is located above the primary sorting and conveying component, and the secondary material blocking component is located above the secondary sorting and conveying component.
[0015] Furthermore, the air supply mechanism includes a primary air supply box, a secondary air supply box, and a tertiary air supply box. The primary, secondary, and tertiary air supply boxes are flexibly connected to the vibrating conveying mechanism. The primary air supply box is located below the primary sorting and conveying assembly and has a primary air supply chamber for blowing air into the primary sorting and conveying assembly. The secondary air supply box is located below the secondary sorting and conveying assembly and has a secondary air supply chamber for blowing air into the secondary sorting and conveying assembly. The tertiary air supply box is located below the tertiary sorting and discharging assembly and has a tertiary air supply chamber for blowing air into the tertiary sorting and discharging assembly.
[0016] Furthermore, the fabric dispersing and conveying assembly includes a striking bracket, a striking vibrating rod, and a striking driver. The striking driver is fixedly mounted on the base frame, the striking bracket is fixedly mounted on the vibrating conveying mechanism, the first end of the striking vibrating rod is fixedly mounted on the striking bracket and electrically connected to the striking driver, and the second end of the striking driver rod is arranged facing the back of the conveying dispersing plate.
[0017] This utility model has the following beneficial effects:
[0018] This utility model discloses a sintering wet fuel sorting system, comprising an air supply mechanism and a material sorting mechanism. The material sorting mechanism includes a base frame, a vibrating conveyor mechanism, a multi-stage sorting unit, a material dispersing unit, a material blocking and impacting unit, and an air hood. The multi-stage sorting unit is fixedly arranged on the vibrating conveyor mechanism. The air hood covers the base frame and encloses the multi-stage sorting unit to form an air-classifying chamber. The air hood is sequentially provided with a material inlet, a dust outlet, and a discharge port. The air supply mechanism is located on the base frame and below the multi-stage sorting unit. The material dispersing unit is located at the head of the multi-stage sorting unit, and the material blocking and impacting unit is located above the multi-stage sorting unit and downstream of the material dispersing unit. Sintering wet fuel enters the multi-stage sorting unit from the material inlet, and the vibrating conveyor mechanism drives the multi-stage sorting unit to vibrate synchronously. Fluidized separation is achieved by supplying air from the bottom of the multi-stage sorting unit through the air supply mechanism. The material dispersing unit drives the head of the multi-stage sorting unit to vibrate, thereby dispersing the water-containing agglomerated material at the head. The dispersed material is then conveyed on the surface of the multi-stage sorting unit and undergoes multi-stage air separation in the air separation chamber. Simultaneously, the material is further dispersed by the material blocking and dispersing unit. The air-separated and dispersed materials are further separated at the tail of the multi-stage sorting unit. Dust material is output through the dust outlet, and particulate material after air separation is output outside the air separation chamber through the tail of the multi-stage sorting unit. By adding material dispersing and material blocking and dispersing steps during the vibration conveying and fluidized separation process, the technical problem of poor separation efficiency of sintered wet fuel in existing fuel sorting devices is solved.
[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description
[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0021] Figure 1 This is one of the structural schematic diagrams of a sintering wet fuel sorting system in one embodiment of the present invention;
[0022] Figure 2 This is the second schematic diagram of the sintering wet fuel sorting system in one embodiment of the present invention;
[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0024] Figure 4This is a schematic diagram of the structure of the primary air distribution plate of the sintering wet fuel sorting system in another embodiment of the present invention;
[0025] Figure 5 yes Figure 4 A three-dimensional structural diagram of a stroke cap;
[0026] Figure 6 This is a schematic diagram of the structure of the material dispersing and conveying component of the sintering wet fuel sorting system in another embodiment of the present invention;
[0027] Figure 7 This is a three-dimensional structural schematic diagram of the primary baffle assembly of the sintering fuel sorting device in one embodiment of the present invention;
[0028] Figure 8 This is a schematic diagram of the planar structure of the primary baffle assembly of the sintering fuel sorting device in one embodiment of the present invention.
[0029] Legend:
[0030] 100. Sintering wet fuel sorting system; 10. Air supply mechanism; 11. Primary air supply box; 12. Secondary air supply box; 13. Tertiary air supply box; 20. Fabric sorting mechanism; 201. Material inlet;
[0031] 202. Dust outlet; 203. Discharge outlet; 21. Basic frame; 22. Vibrating conveyor mechanism;
[0032] 23. Multi-stage sorting unit; 231. Fabric dispersing and conveying assembly; 232. Primary sorting and conveying assembly; 2321. Primary air distribution plate; 23211. Air cap; 2322. Primary rectifier grid; 233. Secondary sorting and conveying assembly; 2331. Secondary air distribution plate; 2332. Secondary rectifier grid; 234. Tertiary sorting and discharge assembly; 2241. Tertiary air distribution plate; 2242. Discharge conveyor plate; 24. Fabric dispersing unit; 25. Material blocking and dispersing unit; 251. Primary material blocking assembly; 252. Secondary material blocking assembly; 26. Air cover; 261. Upper cover; 262. Lower cover. Detailed Implementation
[0033] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0036] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8 As shown, the present invention provides a sintering wet fuel sorting system 100, including an air supply mechanism 10 and a material sorting mechanism 20. The material sorting mechanism 20 includes a base frame, a vibrating conveying mechanism 22, a multi-stage sorting unit 23, a material dispersing unit 24, a material blocking and impacting unit 25, and an air hood 26. The multi-stage sorting unit 23 is fixedly arranged on the vibrating conveying mechanism 22. The air hood 26 covers the base frame and surrounds the multi-stage sorting unit 23 to form an air separation chamber. The air hood 26 is provided with a material inlet 201, a dust outlet, and a discharge port in sequence. The air supply mechanism 10 is located on the base frame and below the multi-stage sorting unit 23. The material dispersing unit 24 is located at the head of the multi-stage sorting unit 23. The material blocking and impacting unit 25 is located above the multi-stage sorting unit 23 and downstream of the material dispersing unit 24.
[0038] This utility model provides a sintering wet fuel sorting system 100, including an air supply mechanism 10 and a material sorting mechanism 20. The material sorting mechanism 20 includes a base frame, a vibrating conveyor mechanism 22, a multi-stage sorting unit 23, a material dispersing unit 24, a material blocking and impacting unit 25, and an air hood 26. The multi-stage sorting unit 23 is fixedly arranged on the vibrating conveyor mechanism 22. The air hood 26 covers the base frame and encloses the multi-stage sorting unit 23 to form an air separation chamber. The air hood 26 is provided with a material inlet 201, a dust outlet, and a discharge port in sequence. The air supply mechanism 10 is located on the base frame and below the multi-stage sorting unit 23. The material dispersing unit 24 is located at the head of the multi-stage sorting unit 23. The material blocking and impacting unit 25 is located above the multi-stage sorting unit 23 and downstream of the material dispersing unit 24. Sintering wet fuel enters the multi-stage sorting unit 23 from the material inlet 201. The conveying mechanism 22 drives the multi-stage sorting unit 23 to vibrate synchronously. Under the action of the air supply mechanism 10, air is supplied from the bottom of the multi-stage sorting unit 23 for fluidized separation. The material dispersing unit 24 is used to drive the head of the multi-stage sorting unit 23 to vibrate, thereby dispersing the water-containing agglomerated material at the head. The dispersed material is conveyed on the surface of the multi-stage sorting unit 23 and undergoes multi-stage air separation in the air separation chamber. At the same time, the material is further dispersed under the action of the material blocking and dispersing unit 25. The air-separated and dispersed material is further separated at the tail of the multi-stage sorting unit 23. The dust material is output through the dust outlet 202, and the particulate material after air separation is output to the outside of the air separation chamber through the tail of the multi-stage sorting unit 23. In the process of vibration conveying and fluidized separation, the material dispersing and material blocking and dispersing links are added, which solves the technical problem of poor separation efficiency of existing fuel sorting devices for sintered wet fuel.
[0039] Understandably, the sintering wet fuel sorting system 100 of this utility model is designed for wet fine coal powder with a moisture content of 7% to 20% and a particle size distribution of 0 to 5 mm. It can fully separate materials smaller than 0.5 mm from the wet fuel in the sintering process, solving the technical problem that existing raw fuel is directly fed into the sintering production without any treatment after crushing, resulting in too many particles smaller than 0.5 mm and low sintering utilization efficiency.
[0040] The sintering wet fuel sorting system 100 provided by this utility model can fully separate materials smaller than 0.5 mm from the sintering wet fuel, solving the technical problem that the existing raw fuel is directly fed into the sintering production without any treatment after being crushed, resulting in too many particles smaller than 0.5 mm and low sintering utilization efficiency.
[0041] Understandably, the vibrating conveyor mechanism 22 includes a vibrating conveyor table and a vibrating drive motor. The vibrating drive motor is mounted on the vibrating conveyor table to drive the vibrating conveyor table to vibrate, thereby causing the multi-stage sorting unit 23 to vibrate synchronously for material conveying. The vibrating drive motor can be a centrifugal drive motor.
[0042] Understandably, in this invention, a reset spring can be arranged between the vibrating conveying mechanism 22 and the base frame 21 to allow the vibrating conveying table to be movably set relative to the base frame 21.
[0043] Furthermore, the multi-stage sorting unit 23 includes a fabric dispersing and conveying assembly 231, a primary sorting and conveying assembly 232, a secondary sorting and conveying assembly 233, and a tertiary sorting and discharging assembly 234 arranged sequentially along the conveying direction. The fabric dispersing and conveying assembly 231, the primary sorting and conveying assembly 232, the secondary sorting and conveying assembly 233, and the tertiary sorting and discharging assembly 234 are all fixedly mounted on the vibrating conveying mechanism 22. The material inlet 201 is located above the fabric dispersing and conveying assembly 231. On the input side, the fabric dispersing and conveying assembly includes a fabric conveying plate and a dispersing plate arranged sequentially along the conveying direction. The material inlet 201 is located above the fabric conveying plate. The dispersing plate is arranged downwards along the conveying direction between the fabric conveying plate and the secondary sorting assembly. The fabric dispersing unit 24 is located on the back of the dispersing plate. In this invention, the fabric conveying plate is arranged horizontally, and the dispersing plate is arranged downwards along the conveying direction. Both the fabric conveying plate and the dispersing plate are blind plates. In specific implementation, the sorting process includes agglomerated material dispersing, fluidization stratification, precise grading, and vibration conveying. Agglomerated material dispersing is mainly achieved by the fabric dispersing and conveying assembly 231. Fluidization stratification is mainly achieved by the primary sorting and conveying assembly 232, the secondary sorting and conveying assembly 233, and the material blocking and dispersing unit 25 under the action of wind. Precise grading is mainly achieved by the tertiary sorting and discharging assembly 234 under the action of wind.
[0044] Furthermore, the fabric dispersing and conveying assembly includes a striking bracket, a striking vibrating rod, and a striking driver. The striking driver is fixedly mounted on the base frame 21, the striking bracket is fixedly mounted on the vibrating conveying mechanism 22, the first end of the striking vibrating rod is fixedly mounted on the striking bracket and electrically connected to the striking driver, and the second end of the striking driver rod is arranged facing the back of the conveying dispersing plate.
[0045] More preferably, the striking drive rods are arranged in a direction perpendicular to the conveying disintegration plate, and multiple striking drive rods are arranged at intervals along the width direction of the conveying disintegration plate.
[0046] Even better, the vibrating rod drives the conveyor dispersing plate to generate high-frequency vibration. By arranging the material dispersing conveyor assembly, during the material conveying process, the material reaching the conveyor dispersing plate can improve the uniformity of the material layer distribution under the high-frequency resonance of the vibrating rod, and at the same time, it can also achieve the initial vibration separation of agglomerated materials.
[0047] Furthermore, the primary sorting and conveying assembly includes a primary air distribution plate 2321 and a primary rectifier grid 2322 arranged sequentially along the conveying direction. The primary air distribution plate 2321 is arranged horizontally, and the primary rectifier grid 2322 is arranged downwardly along the conveying direction between the primary air distribution plate 2321 and the secondary sorting and conveying assembly 233. The primary air distribution plate is a double-layer perforated plate.
[0048] Furthermore, the primary air distribution plate 2321 includes an air hood 23211 and an upper plate and a lower plate arranged at intervals along the height direction. The air hood 23211 is fixedly installed between the upper plate and the lower plate. Multiple air hoods 23211 are arranged in an array, and the air hood 23211 is provided with air distribution holes.
[0049] More preferably, the wind cap 23211 includes an inlet section, a frustum section (diffuser section), and an annular section (flow equalization section) arranged coaxially. The inlet section has an axially penetrating inlet hole. The frustum section has an annular flow equalization chamber arranged in a ring. The annular section has an annular outlet chamber. The top surface of the annular section has an outlet hole communicating with the annular outlet chamber. Multiple outlet holes are arranged at intervals along the circumference of the annular section. The inlet holes, the annular flow equalization chamber, and the annular outlet chamber are interconnected. More preferably, the outlet holes are arranged axially outward at an angle. In one specific embodiment of this utility model, eight outlet holes are provided.
[0050] Furthermore, it also includes a shelf fastening connector, with the upper and lower shelves arranged and fixed at intervals by the shelf fastening connector, the top of the hood 23211 being interference-fitted onto the upper shelf, and the bottom of the hood 23211 being interference-fitted onto the lower shelf. In actual operation, the air cap 23211 is embedded between the upper and lower plates. The ambient temperature air in the primary air supply chamber enters the air cap 23211 through the air inlet, passes through the diffusion section and the flow equalization section in sequence, and is then evenly divided into 8 streams that act on the material layer through the air outlet. The air cap 23211 does not need to extend into the material layer, which is more suitable for thin material layers than the existing air cap 23211 form. It can not only enhance the jet velocity when acting on the material and prevent the occurrence of blind spots in the jet action, but also the slightly tilted angle of the air outlet can enhance the collision between materials in the action area of the primary air distribution plate 2321, thereby further promoting the separation of agglomerated materials. In addition, compared with the traditional straight hole type air distribution plate, the resistance of this double-layer multi-hole air distribution plate will not be significantly different.
[0051] Furthermore, the secondary sorting component includes a secondary air distribution plate 2331 and a secondary rectifier grid 2332 arranged sequentially along the conveying direction. The secondary rectifier grid 2332 is arranged downwardly along the conveying direction between the secondary air distribution plate 2331 and the tertiary sorting discharge component 234. More preferably, the secondary air distribution plate 2331 is arranged horizontally.
[0052] Furthermore, the three-stage sorting and discharge assembly 234 includes a three-stage air distribution plate 2241 and a discharge conveying plate 2242 arranged sequentially along the conveying direction. The discharge conveying plate 2242 is located downstream of the three-stage air distribution plate 2241 and extends out to the outside of the air separation chamber and communicates with the discharge port.
[0053] Furthermore, the air cover 26 includes an upper cover 261 and a lower cover 262. The lower cover 262 is fixedly mounted on the vibrating conveyor mechanism 22 and covers the multi-stage sorting unit 23. The upper cover 261 is fixedly mounted on the base frame and presses over the lower cover 262. The upper cover 261 and the lower cover 262 are sealed together by a corrugated rubber sleeve. The upper cover 261 and the lower cover 262 together with the multi-stage sorting unit 23 form an air separation chamber.
[0054] Furthermore, the material blocking and impacting unit 25 includes a primary material blocking component 251 and a secondary material blocking component. Both the primary material blocking component 251 and the secondary material blocking component 252 are disposed on the upper cover 261 and located in the air separation chamber. The primary material blocking component 251 is disposed above the primary sorting and conveying component 232, and the secondary material blocking component 252 is disposed above the secondary sorting and conveying component 233.
[0055] In this invention, the wind hood 26 includes an upper hood 261 and a lower hood 262. The lower hood 262 vibrates with the vibrating conveyor mechanism 22 to prevent leakage during material feeding. The upper hood 261 is sealed on the lower hood 262 to ensure air separation performance. At the same time, the primary baffle assembly 251 and the secondary sorting and conveying assembly 233 are arranged on the upper hood 261, which can crush the rising material without vibrating themselves.
[0056] Furthermore, the primary baffle assembly 251 includes a first lifting rod, a first lifting frame, and first wind deflectors spaced apart along the height direction on the first lifting frame. A second wind deflector is arranged between two adjacent first wind deflectors. Both the first and second wind deflectors are arranged on the side wall of the first lifting frame, with the first and second wind deflectors spaced apart. The first wind deflector includes a first window support rail, a first air guide window, and a first fixing block. The first window support rail and the first fixing block are respectively provided on the two side walls of the first lifting frame. The first window support rail is movably disposed on the side wall of the first lifting frame, and the first fixing block is fixedly disposed on the side wall of the first frame and located below the first window support rail. The upper side of the first air guide window is mounted between two oppositely arranged first window support rails and is hinged. The lower side of the first air guide window... Supported on two first fixed blocks, the first air guide window is arranged on the corresponding first fixed block along a first oblique direction. The second wind deflector includes a second window support rail, a second air guide window, and a second fixed block. The two side walls of the second hoisting frame are respectively provided with the second window support rail and the second fixed block. The second window support rail is movably provided on the side wall of the second hoisting frame. The second fixed block is fixedly provided on the side wall of the second frame and is located below the second window support rail. The upper side of the second air guide window is mounted between the two oppositely arranged second window support rails and is hinged. The lower side of the second air guide window is supported on the two second fixed blocks. The second air guide window is arranged on the corresponding second fixed block along a second oblique direction, which is opposite to the first oblique direction. It also includes a window adjustment component for driving the first window support rail and / or the second window support rail to slide and position.
[0057] In this invention, the tilt angle of the first air guide window can be changed when the first window support rail is slid by the window adjustment component, and the tilt angle of the second air guide window can be changed when the second window support rail is slid by the window adjustment component.
[0058] Optionally, the window adjustment component uses a hydraulic push rod. In one specific embodiment, the window adjustment component includes a first hydraulic push rod, a second hydraulic push rod, and a movable connecting rod. The first hydraulic push rod is located above the uppermost first wind deflector, and the second hydraulic push rod is located below the lowermost first wind deflector. The two ends of the movable connecting rod are respectively movably connected to the movable ends of the first and second hydraulic push rods. The middle part of the movable connecting rod is movably connected to the first and second window support rails. The fixed ends of the first and second hydraulic push rods are respectively installed on the side wall of the first hoisting frame. This allows the movable connecting rod to swing through the extension and retraction of the first and / or second hydraulic push rods, thereby causing the first and second window support rails to slide, ultimately adjusting the tilt angle of the first and second air guide windows.
[0059] In this invention, the structure of the secondary baffle assembly 252 is the same as that of the primary baffle assembly 251.
[0060] In a preferred embodiment, the first lifting rod is a telescopic adjustable rod. By setting the first lifting rod to a telescopic adjustable rod, the height between the primary baffle assembly 251 and the primary air distribution plate 2321 can be adjusted. Furthermore, the height of the secondary baffle assembly 252 relative to the secondary air distribution plate 2331 is adjustable. In use, the installation height of the primary baffle assembly 251 and the installation height of the secondary baffle assembly 252 can be adjusted respectively according to the required sorting effect.
[0061] Understandably, in practical implementation, the primary baffle assembly consists of a first lifting frame, a first-layer baffle group, a second-layer baffle group, a third-layer baffle group, a fixing block, and a window adjustment component. The first lifting frame is directly fixed to the upper cover 261 via the first lifting rod. The first-layer baffle group, the second-layer baffle group, and the third-layer baffle group are respectively located within the first lifting frame. The primary baffle assembly 251 does not participate in the vibration of the main system. The baffle assembly includes three layers of baffles arranged in a staggered manner from bottom to top. On the one hand, it is used to provide further impact force to the material being impacted by the jet. The larger the particle size of the material acting on the baffle assembly, the greater the impact force on the material, thereby promoting the separation of agglomerated materials. On the other hand, when the inertia of the material under the impact of the jet is greater than the resistance of one layer of baffle assembly, the material will pass through one layer of baffle assembly and move upward. The setting of the three layers of baffle assembly can ensure that the material of each particle size can fall back to the upper part of the first-stage air distribution plate 2321 under the action of resistance, preventing the material from being drawn away by the negative pressure of the dust removal port (dust outlet 202).
[0062] Furthermore, the air supply mechanism 10 includes a primary air supply box 11, a secondary air supply box 12, and a tertiary air supply box 13. The primary air supply box 11, the secondary air supply box 12, and the tertiary air supply box 13 are flexibly connected to the vibrating conveying mechanism 22. The primary air supply box 11 is located below the primary sorting and conveying assembly 232 and has a primary air supply chamber for blowing air into the primary sorting and conveying assembly 232. The secondary air supply box 12 is located below the secondary sorting and conveying assembly 233 and has a secondary air supply chamber for blowing air into the secondary sorting and conveying assembly 233. The tertiary air supply box 13 is located below the tertiary sorting and discharging assembly and has a tertiary air supply chamber for blowing air into the tertiary sorting and discharging assembly.
[0063] Furthermore, ash discharge valves are arranged at the bottom of the primary air supply box 11, the secondary air supply box 12, and the tertiary air supply box 13.
[0064] This utility model provides a specific sintering wet fuel sorting system 100 as follows:
[0065] The fabric conveying plate and conveying dispersing plate are non-perforated blind plates. The back of the conveying dispersing plate is provided with vibrator mounting holes. The primary air distribution plate 2321 is a double-layer perforated air distribution plate, while the secondary air distribution plate 2331 and the tertiary air distribution plate 2241 are single-layer perforated air distribution plates. The primary rectifier grid 2322 and the secondary rectifier grid 2332 are non-perforated blind plates, and staggered material distribution grids are provided on top of them. The fabric conveying plate, conveying dispersing plate, primary air distribution plate 2321, primary rectifier grid 2322, secondary air distribution plate 2331, secondary rectifier grid 2332, tertiary air distribution plate 2241, and discharge conveying plate 2242 are welded to the vibrating conveying mechanism 22 and are supported by a support frame. The vibrating conveying mechanism 22 is connected to the upper cover 261 and the lower air chambers (primary air supply chamber, secondary air supply chamber, and tertiary air supply chamber) with flexible connections. During vibration operation, only a part of the structure vibrates, thereby reducing the vibration load of the system. A vibratory rod mounting bracket (impact bracket) is welded to the lower part of the conveying and dispersing plate. The upper part of the impact vibratory rod is fixed to the conveying and dispersing plate via the impact bracket, and the lower part is connected to the cable. The impact bracket, the impact vibratory rod, and the conveying and dispersing plate participate in the system vibration together. A first lifting frame is arranged at the corresponding position of the upper cover 261. The first-stage baffle assembly 251 is located on the first lifting frame and is not connected to the vibrating conveying mechanism 22, and does not participate in the system vibration. The first-stage air supply chamber is flexibly and sealed to the first-stage air distribution plate 2321, the second-stage air supply chamber is flexibly and sealed to the second-stage air distribution plate 2331, and the third-stage air supply chamber is flexibly and sealed to the third-stage air distribution plate 2241. Each air chamber is equipped with a guide plate assembly to ensure the uniformity of wind speed distribution in each area of the air distribution plate.
[0066] The specific usage process of the sintering wet fuel sorting system 100 provided by this utility model is as follows:
[0067] When the material reaches the primary air distribution plate 2321, it is subjected to the dual effects of high-frequency vibration from the vibrating motor and high-speed jet impact from the micropores on the double-layer porous air distribution plate (the outlet jet velocity is approximately 30-35 m / s). The material layer is blown upwards and rapidly fluidized. The impact of the high-speed jet causes the fine particles adhering to large particles and the aggregated small particles to initially separate under the action of liquid bridge force. Simultaneously, a primary baffle assembly is installed on the upper part of the primary air distribution plate 2321. After being impacted by the high-pressure jet, the material will sequentially strike the three layers of baffles and then fall back to the primary air distribution plate under the resistance of the baffles. On plate 2321, the material impacts the baffle plate again due to the high-speed jet, repeating the process of impact, collision, and falling. During this process, due to the high fluidization speed of the material, the corresponding kinetic energy is also large, and the impact on the material when it hits the baffle plate is also strong. This allows the agglomerated material that failed to separate under the impact of the high-pressure jet to be separated under the strong impact. This impact is more obvious for larger particles. At the same time, the three baffle plates are arranged in a staggered and inclined manner, with the particle size of the material blocked at the top decreasing, in order to prevent the material that has not been fully separated from being directly drawn away from the dust collection port. Because the impact of the micro-perforated jet from the primary air distribution plate 2321 is relatively large, coupled with the resistance of the upper primary baffle plate assembly, the movement of the material in this area will be relatively chaotic, and the unevenness of the material layer distribution may be affected. Therefore, a primary rectifier grid 2322 is set after the primary air distribution plate 2321, which can not only adjust the uniformity of the material distribution on the air distribution plate, but also, to a certain extent, change the mixing of the material on the primary air distribution plate 2321 so that the range of material affected by the jet is wider.
[0068] Upon reaching the secondary air distribution plate, the material also exhibits a fluidized state under high-frequency vibration and micro-jet propagation. However, due to the reduced velocity of the micro-jet (outlet jet velocity approximately 15-20 m / s), the regularity of the motion is significantly enhanced, essentially resembling a boiling fluidized bed. Initially, fluidization occurs with large particles being thrown up by the micro-jet, followed by smaller particles being carried out of the material layer by the airflow. As the fluidization stabilizes, significant stratification emerges. A secondary baffle assembly is also installed at the top of the secondary air distribution plate. This serves two purposes: firstly, it separates agglomerated materials that failed to separate within the area of the primary air distribution plate; secondly, it prevents materials with a particle size of +0.5 mm from being drawn away by the negative pressure of the dust collector. However, due to the large distance between the secondary air distribution plate and the secondary baffle assembly, and the reduced jet velocity, the amount of material blocked by the secondary baffle assembly also decreases, thus requiring a corresponding reduction in the baffle density. A secondary rectifier grid is installed after the secondary air distribution plate, primarily to enhance the uniformity of the material layer distribution.
[0069] Upon reaching the third-stage air distribution plate, the velocity of the micro-jet further decreases (the outlet jet velocity is approximately 8-12 m / s). The material's movement also exhibits a state where coarse particles are concentrated at the bottom of the bed, while fine particles are suspended at the top. As the material moves upward, the jet gradually weakens, and the particle size decreases as the material falls higher. The distance between the third-stage distribution plate and the dust collection port is sufficient to allow +0.5 mm particles to fall. Simultaneously, the dust collection port uses a slight negative pressure to transport -0.5 mm particles to the dust collection system for recycling. Meanwhile, the coarse particles falling onto the third-stage air distribution plate continue to move forward under the action of the vibrating motor, and are recycled from the coarse particle discharge port (discharge outlet) after passing through the discharge conveyor plate.
[0070] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A sintering wet fuel sorting system, characterized in that, it comprises a blast mechanism and a material sorting mechanism, the material sorting mechanism comprises a base frame, a vibrating conveying mechanism, a multi-stage sorting unit, a material breaking unit, a material blocking and breaking unit and a hood, the multi-stage sorting unit is fixedly arranged on the vibrating conveying mechanism, the hood is arranged on the base frame and encloses the multi-stage sorting unit to form a winnowing chamber, a material inlet, a dust outlet and a discharge port are sequentially arranged on the hood, the blast mechanism is arranged on the base frame and below the multi-stage sorting unit, the material breaking unit is arranged at the head position of the multi-stage sorting unit, and the material blocking and breaking unit is arranged above the multi-stage sorting unit and downstream of the material breaking unit.
2. The sintering wet fuel sorting system according to claim 1, characterized in that, the multi-stage sorting unit comprises a material breaking and conveying assembly, a first-stage sorting conveying assembly, a second-stage sorting conveying assembly and a third-stage sorting discharging assembly which are sequentially arranged along the conveying direction, the material breaking and conveying assembly, the first-stage sorting conveying assembly, the second-stage sorting conveying assembly and the third-stage sorting discharging assembly are all fixedly arranged on the vibrating conveying mechanism, and the material inlet is arranged above the input side of the material breaking and conveying assembly. The material breaking and conveying assembly comprises a material conveying plate and a conveying and breaking plate which are sequentially arranged along the conveying direction, the material inlet is arranged above the material conveying plate, the conveying and breaking plate is arranged between the material conveying plate and the second-stage sorting conveying assembly and is inclined downward along the conveying direction, and the material breaking unit is arranged on the back of the conveying and breaking plate.
3. The sintering wet fuel sorting system according to claim 2, characterized in that, the first-stage sorting conveying assembly comprises a first-stage air distribution plate and a first-stage rectifying grid which are sequentially arranged along the conveying direction, the first-stage air distribution plate is horizontally arranged, the first-stage rectifying grid is arranged between the first-stage air distribution plate and the second-stage sorting conveying assembly and is inclined downward along the conveying direction, and the first-stage air distribution plate is a double-layer hole plate.
4. The sintering wet fuel sorting system according to claim 3, characterized in that, the first-stage air distribution plate comprises a plurality of air caps and upper and lower layers which are arranged in the height direction, the air caps are fixedly arranged between the upper and lower layers, the air caps are arranged in an array, and the air caps are provided with air distribution holes.
5. The sintering wet fuel sorting system according to claim 2, characterized in that, the second-stage sorting conveying assembly comprises a second-stage air distribution plate and a second-stage rectifying grid which are sequentially arranged along the conveying direction, and the second-stage rectifying grid is arranged between the second-stage air distribution plate and the third-stage sorting discharging assembly and is inclined downward along the conveying direction.
6. The sintering wet fuel sorting system according to claim 2, characterized in that, the third-stage sorting discharging assembly comprises a third-stage air distribution plate and a discharging conveying plate which are sequentially arranged along the conveying direction, the discharging conveying plate is downstream of the third-stage air distribution plate and extends out of the winnowing chamber and communicates with the discharge port.
7. The sintered wet fuel sorting system according to claim 2, wherein the air cover comprises an upper cover and a lower cover, the lower cover is fixed on the vibrating conveying mechanism and covers the multi-stage sorting unit, the upper cover is fixed on the base frame and covers the lower cover, the upper cover and the lower cover are connected by a corrugated rubber sleeve, and the upper cover, the lower cover and the multi-stage sorting unit form the air sorting chamber.
8. The sintered wet fuel sorting system according to claim 7, wherein the material blocking and knocking unit comprises a first blocking assembly and a second blocking assembly, the first blocking assembly and the second blocking assembly are arranged on the upper cover and in the air sorting chamber, the first blocking assembly is arranged above the first sorting and conveying assembly, and the second blocking assembly is arranged above the second sorting and conveying assembly.
9. The sintered wet fuel sorting system according to claim 2, wherein the air blowing mechanism comprises a first air blowing box, a second air blowing box and a third air blowing box, the first air blowing box, the second air blowing box and the third air blowing box are flexibly connected with the vibrating conveying mechanism, the first air blowing box is arranged below the first sorting and conveying assembly and has a first air blowing chamber for blowing air to the first sorting and conveying assembly, the second air blowing box is arranged below the second sorting and conveying assembly and has a second air blowing chamber for blowing air to the second sorting and conveying assembly, and the third air blowing box is arranged below the third sorting and discharging assembly and has a third air blowing chamber for blowing air to the third sorting and discharging assembly.
10. The sintered wet fuel sorting system according to claim 2, wherein the material blocking and knocking conveying assembly comprises a knocking support, a knocking vibrating rod and a knocking driver, the knocking driver is fixed on the base frame, the knocking support is fixed on the vibrating conveying mechanism, the first end of the knocking vibrating rod is fixed on the knocking support and electrically connected with the knocking driver, and the second end of the knocking vibrating rod is arranged towards the back of the conveying and knocking plate.