Adjustable sintering press roll device

Abstract

The utility model provides a kind of adjustable sintering machine pressure roller device, including pressure device and trolley, the pressure device connects trolley, the pressure device includes adjusting hand wheel, adjusting screw rod, fixed plate, pressure roller and stabilizer, the adjusting hand wheel connects adjusting screw rod, the adjusting screw rod connects fixed plate, pressure roller support, the pressure roller support connects pressure roller, stabilizer, the trolley connects air bellow;The utility model is provided with five groups of adjustable pressure roller between seven rollers and ignition platform, combined with adjusting screw rod and stabilizer structure, realizes material surface dynamic flattening.The device significantly improves cloth flatness, reduces return ore rate, improves sintered ore output and quality, with the advantages of simple structure, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical sintering equipment technology, and in particular to an adjustable sintering machine pressing roller device. Background Technology

[0002] The material feeding process on the sintering machine trolley is an important production step in the sintering process. It is required that the material be fed flat without grooves or bulges. However, the material surface formed by the general material feeding device often has various phenomena such as grooves, bulges, and uneven thickness, which affect subsequent ignition and combustion, ultimately leading to an increase in the sinter return rate, a decrease in output, and failure to meet the particle size distribution requirements of the sinter.

[0003] In existing technologies, the sintering mixture is distributed onto a trolley via multiple sets of equipment, including a mixing silo, circular rollers, seven rollers, and a feed loader. The smoothness of the material surface on the trolley is affected by various factors. Factors such as the distribution equipment, the properties of the mixture, the equipment condition, operational control, and the external environment can all cause unevenness in the material surface. Unevenness in the material surface will adversely affect the quality of the sinter and production efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an adjustable sintering machine pressing roller device, which can effectively solve the problem of uneven material distribution in the sintering machine, improve the quality and production efficiency of sintered ore, and ensure the stable operation of the sintering machine.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an adjustable sintering machine pressing roller device, including a pressing device and a trolley. The pressing device is connected to the trolley. The pressing device includes an adjusting handwheel, an adjusting screw, a fixed plate, a pressing roller and a stabilizing rod. The adjusting handwheel is connected to the adjusting screw. The adjusting screw is connected to the fixed plate and the pressing roller bracket. The pressing roller bracket is connected to the pressing roller and the stabilizing rod. The trolley is connected to the bellows.

[0006] As a further improvement of this utility model: the pressing device is provided with five sets, arranged between the seven rollers and the ignition platform, with the first three sets located near the seven rollers and the last two sets located near the ignition platform.

[0007] As a further improvement of this utility model: the adjusting screw passes through the fixed plate through the central threaded hole of the fixed plate, and the adjusting screw is connected to the fixed plate by threads.

[0008] As a further improvement of this utility model: the pressure roller is fixed on the pressure roller bracket, and the bottom of the adjusting screw is movably connected to the pressure roller bracket.

[0009] As a further improvement of this utility model: the pressure roller is mounted on the pressure roller bracket by bearings and can roll freely as the material layer moves.

[0010] As a further improvement of this utility model: the adjusting screw and the fixed plate are connected by a thread, and the adjusting handwheel drives the adjusting screw to rotate in order to adjust the vertical height of the pressure roller.

[0011] As a further improvement of this utility model: the stabilizing rod is symmetrically welded to both sides of the pressure roller bracket, and its upper part passes through the limiting hole of the fixing plate to limit the horizontal displacement of the pressure roller bracket.

[0012] As a further improvement of this utility model: the fixing plate is welded to the steel structure of the sintering machine, and the spacing between the fixing plates of each set of pressure roller devices is adjustable to adapt to different trolley widths.

[0013] As a further improvement of this utility model: the surface of the pressing device is covered with a wear-resistant rubber layer with a thickness of 5-10mm, the diameter of the pressing roller is 200-300mm, the length is 80%-90% of the width of the trolley, the pitch of the adjusting screw is 4-6mm, and the adjustment accuracy is ±1mm.

[0014] A control method for an adjustable sintering machine pressing roller device includes the following steps:

[0015] The thickness and flatness of the material layer are monitored in real time using sensors.

[0016] Adjust the handwheel according to the monitoring data to drive the pressure roller to the target height;

[0017] The stabilizer bar works in conjunction with the fixed plate to ensure the vertical movement of the pressure roller;

[0018] The sensor is a laser rangefinder or a pressure sensor, installed below the pressure roller bracket.

[0019] As a further improvement to this invention, a pressure sensor and a displacement sensor are added to the existing adjustable pressure roller to monitor the flatness of the material surface and the contact pressure between the pressure roller and the material layer in real time. The sensor data is analyzed by a PLC (Programmable Logic Controller) or an industrial computer to automatically adjust the height of the pressure roller, achieving dynamic closed-loop control. For example, when a localized material surface depression is detected, the system can lower the height of the corresponding pressure roller to apply greater pressure; conversely, if the material surface is too high, the pressure roller is raised. This improvement significantly reduces manual intervention, improves adjustment accuracy and response speed, and especially adapts quickly to and maintains material surface flatness when the properties of the mixture fluctuate or the external environment changes, further improving the stability of sinter quality.

[0020] As a further improvement to this invention, the existing pressure roller is designed as a segmented structure, with each segment's height independently adjustable to accommodate localized unevenness in the width direction of the trolley. For example, a single pressure roller can be divided into several small segments (e.g., 5-8 segments), each individually controlled by a micro-motor or hydraulic device, and the roller surface can be covered with a flexible material (e.g., a polyurethane coating). The flexible material reduces shear damage to the mixture and prevents excessive compaction of the material layer during the pressing process, which could lead to decreased air permeability. The segmented design can precisely address differences in the edges or center of the trolley, making it particularly suitable for wide-width sintering machines and further optimizing the uniformity of material distribution.

[0021] As a further improvement to this invention: To address the high-temperature operating environment of the sintering machine, a thermal expansion compensation mechanism (such as a bellows or flexible coupling) is added to the pressure roller support and adjusting screw to prevent deformation of metal components caused by high temperatures from affecting the adjustment accuracy. Simultaneously, a high-temperature resistant ceramic coating (such as an Al2O3-TiO2 composite coating) is sprayed onto the surface of the pressure roller to improve its wear resistance and oxidation resistance, extending its service life. This improvement solves the problems of jamming and wear that easily occur in existing devices under long-term high-temperature conditions, reduces maintenance frequency, and ensures the reliability of the device in harsh environments.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The causes of uneven material surface in sintering machines are multifaceted and require comprehensive analysis and solutions from multiple perspectives, including the material distribution system, the properties of the mixture, the equipment status, operation control, and the external environment. This invention adds an adjustable pressure roller to the section between the seven rollers and the ignition platform. By adjusting the height between the pressure roller and the material layer, the material surface is flattened.

[0024] The device has a simple structure and can adjust the height between the pressure roller and the material surface, so that the uneven material surface is flattened by the pressure roller, ensuring uniform ignition of the material surface, reducing the return ore rate, and improving the quality and output of sinter.

[0025] The surface flatness of the material is improved by ≥30%, and the ignition uniformity is significantly improved; the return ore rate is reduced by 15%-20%, and the sinter output is increased by more than 10%; the structure is simple and reliable, the maintenance cost is low, and it can adapt to different working conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the right-side structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the distribution structure of the pressure rollers of this utility model;

[0029] Figure 4 This is a schematic diagram of the pressing device of this utility model;

[0030] In the diagram: 1. Pressing device; 2. Trolley; 3. Adjusting handwheel; 4. Adjusting screw; 5. Fixing plate; 6. Pressing roller; 7. Stabilizing bar; 8. Pressing roller bracket; 9. Air box; 10. Center threaded hole of fixing plate; 11. Material layer. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The present invention will now be further described in conjunction with the accompanying drawings and embodiments: Figure 1-4 An adjustable sintering machine pressing roller device is shown, including a pressing device 1 and a trolley 2. The pressing device 1 is connected to the trolley 2. The pressing device 1 includes an adjusting handwheel 3, an adjusting screw 4, a fixed plate 5, a pressing roller 6, and a stabilizing rod 7. The adjusting handwheel 3 is connected to the adjusting screw 4. The adjusting screw 4 is connected to the fixed plate 5 and the pressing roller bracket 8. The pressing roller bracket 8 is connected to the pressing roller 6 and the stabilizing rod 7. The trolley 2 is connected to the air box 9.

[0035] In a preferred embodiment, the pressing device 1 is provided with five sets, arranged between the seven rollers and the ignition platform, with the first three sets located near the seven rollers and the last two sets located near the ignition platform.

[0036] In a preferred embodiment, the adjusting screw 4 passes through the central threaded hole 10 of the fixing plate 5, and the adjusting screw 4 and the fixing plate 5 are connected by threads.

[0037] In a preferred embodiment, the pressure roller 6 is fixed on the pressure roller bracket 8, and the bottom of the adjusting screw 4 is movably connected to the pressure roller bracket 8.

[0038] In a preferred embodiment, the pressure roller 6 is mounted on the pressure roller bracket 8 via bearings and can roll freely as the material layer 11 moves.

[0039] In a preferred embodiment, the adjusting screw 4 is threadedly engaged with the fixed plate 5, and the handwheel 3 drives the adjusting screw 4 to rotate in order to adjust the vertical height of the pressure roller 6.

[0040] In a preferred embodiment, the stabilizing rod 7 is symmetrically welded to both sides of the pressure roller bracket 8, and its upper part passes through the limiting hole of the fixing plate 5 to limit the horizontal displacement of the pressure roller bracket 8.

[0041] In a preferred embodiment, the fixing plate 5 is welded to the steel structure of the sintering machine, and the spacing between the fixing plates 5 of each set of pressure rollers 6 is adjustable to accommodate different trolley widths 3.

[0042] In a preferred embodiment, the surface of the pressing device 1 is covered with a wear-resistant rubber layer with a thickness of 5-10mm, the diameter of the pressing roller 6 is 200-300mm, the length is 80%-90% of the width of the trolley 2, and the pitch of the adjusting screw 4 is 4-6mm with an adjustment accuracy of ±1mm.

[0043] A control method for an adjustable sintering machine pressing roller device includes the following steps:

[0044] The thickness and flatness of the material layer are monitored in real time using sensors.

[0045] Adjust handwheel 3 according to the monitoring data to drive pressure roller 6 to the target height;

[0046] The stabilizer bar 7 cooperates with the fixed plate 5 to ensure the vertical movement of the pressure roller 6;

[0047] The sensor is a laser rangefinder or a pressure sensor, and is installed below the pressure roller bracket 8.

[0048] In a preferred embodiment, a multi-stage pressure roller group is arranged between the seventh roller and the ignition platform, employing a gradient layout of "dense at the front and sparse at the back." For example, three sets of high-density pressure rollers (with smaller spacing) are arranged in the front section near the seventh roller, mainly responsible for coarse flattening; two sets of low-density pressure rollers (with larger spacing) are arranged in the rear section for fine flattening. The initial pressure setting of each set of pressure rollers is different, with a larger pressure used in the front section to quickly eliminate obvious unevenness, and a smaller pressure used in the rear section to avoid over-compaction. This method can improve the pressing efficiency while taking into account the permeability of the material layer, and is suitable for the material distribution requirements of mixtures with different particle sizes, especially reducing the return ore rate.

[0049] In a preferred embodiment, the pressure roller 6 device is designed as a modular structure. Each component (such as the pressure roller bracket 8, adjusting screw 4, and stabilizing rod 7) is connected via standardized interfaces and equipped with a quick-locking device (such as a pin-type buckle). When a component is damaged or requires maintenance, the module can be directly disassembled and replaced without stopping the machine to adjust the overall structure. Furthermore, multiple sets of mounting holes are pre-drilled on the fixing plate 5, allowing for flexible adjustment of the number and position of the pressure roller assembly according to actual production needs. This embodiment significantly reduces maintenance time and improves equipment utilization, making it particularly suitable for sintering plants with continuous production.

[0050] In a preferred embodiment, the pressure roller 6 is linked with the upstream material distribution equipment (such as a circular roller or a loosener) for coordinated control. By sharing parameters of the material distribution system (such as mixture moisture content, flow rate, and particle size distribution), the adjustment strategy of the pressure roller 6 can be dynamically optimized. For example, when the mixture viscosity is detected to be high, the system automatically increases the pressure of the pressure roller to prevent material surface adhesion; if the mixture has poor flowability, the height of the pressure roller 6 is reduced to increase the compaction effect. Simultaneously, it is linked with the combustion parameters of the ignition platform (such as wind speed and temperature) to ensure that the flattened material surface matches the ignition conditions. This embodiment achieves coordinated control throughout the entire process, reducing material distribution defects from the source and improving overall process stability.

[0051] The working principle of this utility model:

[0052] Arrangement of pressure roller group: Five sets of pressure roller devices are set between the seven rollers and the ignition platform, with three in front and two in the back, covering the width of the trolley;

[0053] Height adjustment mechanism: Each set of pressure rollers is connected to the fixed plate through an adjusting screw, and the handwheel drives the screw to move the pressure rollers up and down;

[0054] Stable structure: Stable rods are installed on both sides of the pressure roller bracket, passing through the limiting holes of the fixed plate to ensure the vertical movement of the pressure roller;

[0055] Dynamic adaptability: The height of the pressure roller is adjusted in real time according to the thickness of the material layer to flatten bulges and fill grooves.

[0056] Implementation Case 1:

[0057] like Figure 1-4 An adjustable sintering machine pressing roller device is shown, including a pressing device 1 and a trolley 2. The pressing device 1 is connected to the trolley 2. The pressing device 1 includes an adjusting handwheel 3, an adjusting screw 4, a fixed plate 5, a pressing roller 6, and a stabilizing rod 7. The adjusting handwheel 3 is connected to the adjusting screw 4. The adjusting screw 4 is connected to the fixed plate 5 and the pressing roller bracket 8. The pressing roller bracket 8 is connected to the pressing roller 6 and the stabilizing rod 7. The trolley 2 is connected to the air box 9.

[0058] The pressing device 1 has five sets arranged between the seven rollers and the ignition platform. The first three sets are located near the seven rollers, and the last two sets are located near the ignition platform. The adjusting screw 4 passes through the central threaded hole 10 of the fixed plate 5 and is threadedly connected to the fixed plate 5. The pressing roller 6 is fixed on the pressing roller bracket 8. The bottom of the adjusting screw 4 is movably connected to the pressing roller bracket 8. The pressing roller 6 is mounted on the pressing roller bracket 8 via bearings and can roll freely with the material layer 11. The adjusting screw 4 is threadedly engaged with the fixed plate 5, and the handwheel 3 drives the adjusting screw 4. The vertical height of the pressure roller 6 is adjusted by rotation. The stabilizing rod 7 is symmetrically welded to both sides of the pressure roller bracket 8, and its upper part passes through the limiting hole of the fixing plate 5 to limit the horizontal displacement of the pressure roller bracket 8. The fixing plate 5 is welded to the steel structure of the sintering machine, and the spacing of the fixing plates 5 of each set of pressure roller 6 devices is adjustable to adapt to different trolley 3 widths. The surface of the pressure device 1 is covered with a wear-resistant rubber layer with a thickness of 5-10mm. The diameter of the pressure roller 6 is 200-300mm, and the length is 80%-90% of the width of the trolley 2. The pitch of the adjusting screw 4 is 4-6mm, and the adjustment accuracy is ±1mm.

[0059] A control method for an adjustable sintering machine pressing roller device includes the following steps: real-time monitoring of the material layer thickness and flatness using sensors; adjusting the handwheel 3 according to the monitoring data to drive the pressing roller 6 to the target height; the stabilizing rod 7 cooperating with the fixing plate 5 to ensure the vertical movement of the pressing roller 6; the sensor is a laser rangefinder or a pressure sensor, installed below the pressing roller bracket 8.

[0060] The pressing roller 6 device is installed between the seven rollers and the ignition platform. The whole set consists of five sets of pressing roller 6 devices, three in the front and two in the back. The height of each set of pressing roller 6 can be freely adjusted up and down. The five sets of rollers can flatten the material surface of the entire trolley 2.

[0061] The pressure roller 6 is fixed on the pressure roller bracket 8 and can roll. The adjusting screw 4 is threaded into the fixed plate 5, allowing it to be adjusted up and down along the fixed plate 5. The bottom of the adjusting screw 4 is movable relative to the pressure roller bracket 8, which is then confined to a fixed position at the bottom of the adjusting screw 4. Adjusting the screw allows the pressure roller bracket 8 to move up and down. To stabilize the pressure roller bracket 8, a stabilizing rod 7 is welded to each of its left and right sides. The upper part of the stabilizing rod 7 passes through a hole in the fixed plate 5, and its vertical movement is restricted by the holes in the fixed plate 5. The fixed plate 5 is welded to the steel structure of the sintering machine and positioned appropriately between the seven rollers and the ignition platform.

[0062] Implementation Case 2:

[0063] In this embodiment, as shown Figure 1-4 The adjustable sintering machine pressing roller device shown is technically the same as the pressing roller device in Implementation Case 1.

[0064] Installation steps: Weld the fixing plate to the steel structure of the sintering machine, and arrange the five sets of pressure rollers in a three-in-the-front and two-in-the-back arrangement;

[0065] Adjustment process: Drive the adjusting screw by rotating the handwheel, which will move the pressure roller bracket up and down until the pressure roller contacts the material surface and applies appropriate pressure;

[0066] Dynamic control: The height of the pressure roller is adjusted in real time based on the feedback data from the material layer sensor to ensure a flat material surface.

[0067] Installation location: Weld the five sets of pressing roller devices onto the steel structure of the sintering machine, located between the end of the seven rollers and the starting section of the ignition platform, with a spacing of 1.5m, to ensure coverage of the full width of the trolley (4.8m).

[0068] Structural Assembly: Each assembly includes a pressure roller 6 (300mm in diameter, 800mm in length), an adjusting screw 4 (M30 thread), a fixing plate 5 (20mm thick steel plate), and a stabilizing rod 7 (Φ25mm round steel). The pressure roller bracket 8 is connected to the screw via a hinge, and the stabilizing rod 7 passes through a pre-drilled hole in the fixing plate 5 to limit lateral displacement.

[0069] Height adjustment: In the initial state, adjust handwheel 3 so that the bottom of the pressure roller 6 is 50mm from the surface of the trolley 2. After starting the material feeding system, observe the flatness of the material surface. If there is a local bulge, turn the handwheel counterclockwise to raise the corresponding pressure roller 6; if there is a depression, press down clockwise until the material surface is uniform.

[0070] The main functions of this utility model are:

[0071] Simplified structure: Compared with traditional multi-stage fabric feeding equipment, this device only requires the addition of five sets of pressure rollers, resulting in low modification costs and convenient maintenance;

[0072] High adaptability: It can be adjusted by handwheel to cope with different material characteristics (such as particle size and moisture content) and changes in production rhythm;

[0073] Significant economic benefits: Reducing the return rate directly reduces raw material waste. Based on an annual production of 3 million tons of sinter, the annual cost savings are approximately 12 million yuan.

[0074] In summary, any other corresponding modifications made by those skilled in the art after reading this utility model document, based on the technical solution and concept of this utility model without creative mental effort, shall all fall within the scope of protection of this utility model.

[0075] In the description of this utility model, it should be understood that the terms "upper end face", "lower end face", "top", "bottom", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model. Therefore, they should not be construed as limiting the actual direction of use of this utility model.

[0076] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An adjustable sintering machine pressing roller device, characterized in that, The device includes a pressing device and a trolley. The pressing device is connected to the trolley. The pressing device includes an adjusting handwheel, an adjusting screw, a fixed plate, a pressing roller, and a stabilizing rod. The adjusting handwheel is connected to the adjusting screw, the adjusting screw is connected to the fixed plate and the pressing roller bracket, the pressing roller bracket is connected to the pressing roller and the stabilizing rod, and the trolley is connected to the bellows.

2. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The pressing device is provided in five sets, arranged between the seven rollers and the ignition platform. The first three sets are located near the seven rollers, and the last two sets are located near the ignition platform.

3. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The adjusting screw passes through the central threaded hole of the fixed plate and is connected to the fixed plate by threads.

4. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The pressure roller is fixed on the pressure roller bracket, and the bottom of the adjusting screw is movably connected to the pressure roller bracket.

5. The adjustable sintering machine pressing roller device according to claim 4, characterized in that, The pressure roller is mounted on the pressure roller bracket via bearings and can roll freely as the material layer moves.

6. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The adjusting screw is threadedly engaged with the fixed plate, and the adjusting handwheel drives the adjusting screw to rotate in order to adjust the vertical height of the pressure roller.

7. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The stabilizing rods are symmetrically welded to both sides of the pressure roller bracket, and their upper parts pass through the limiting holes of the fixing plate to restrict the horizontal displacement of the pressure roller bracket.

8. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The fixing plate is welded to the steel structure of the sintering machine, and the spacing between the fixing plates of each set of pressure roller devices is adjustable to adapt to different trolley widths.

9. The adjustable sintering machine pressing roller device according to claim 1, characterized in that, The surface of the pressing device is covered with a wear-resistant rubber layer with a thickness of 5-10mm. The diameter of the pressing roller is 200-300mm, and its length is 80%-90% of the width of the trolley. The pitch of the adjusting screw is 4-6mm, and the adjustment accuracy is ±1mm.

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