A material pressing system for a sintering pallet car

Abstract

The utility model relates to a kind of material pressing systems for sintering bogie, including the material pressing roller extending along the bogie width direction, the side stop roller located in the side of material pressing roller, and the bracket hinged with the side stop roller and material pressing roller, the top surface of the side stop roller is adapted and connected with the small diameter end of round table wheel, the cross section of round table wheel circumferential surface is inward convex arc, and the large diameter end of round table wheel extends to the upper end of bogie edge. When using, the bogie is moved from front to back, the material pressing roller first presses the material on the top surface of bogie, and in the process of compacting material, the material squeezed to the side will be compacted downward by the setting of round table wheel on the side stop roller before it falls over the rail, so that it is tightly attached to the inner side of rail, thereby reducing the material scattering phenomenon on the top of rail. At the same time, the setting of side stop roller can play a mechanical limiting role when the bogie rail is excessively inclined, preventing it from scratching the igniter above.

Description

Technical Field

[0001] This utility model relates to the field of sintering trolleys, and more particularly to the field of trolley pressing technology, specifically referring to a pressing system for sintering trolleys. Background Technology

[0002] In sintering production, the mixture is spread onto the sintering trolley via a round roller feeder and a nine-roller distributor. Due to the natural angle of repose effect of the material, large particles of sinter tend to roll to the sides of the trolley, resulting in coarser particle size, higher porosity, and lower density in the edge areas, leading to material segregation. This makes the permeability of the material layer on the sides of the trolley significantly higher than that in the center.

[0003] When the trolley moves to the area below the igniter and the lower air box begins to draw air, the airflow preferentially passes through the side with less resistance, causing overburning of the material on the side and incomplete combustion in the center. This edge effect leads to uneven sinter quality, increased return rate, and increased coke powder consumption. At the same time, a large amount of cold air leaks in from the edge, increasing the power consumption of the main exhaust fan and significantly increasing production costs.

[0004] Traditional pressure rollers can compact the material surface to a certain extent, but they are prone to forming fish-scale-like protrusions on the material surface, affecting the uniformity of sintering. They also cannot handle material spillage above the trolley sideboard, and have poor adaptability to working conditions such as trolley deviation or sideboard tilt, and cannot fundamentally solve the problem of edge air leakage. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a pressing system for sintering trolleys. By setting up a circular roller, the material squeezed to the side is pressed downwards and compacted, making it adhere tightly to the inner side of the guardrail, thereby reducing material spillage at the top of the guardrail. A scraper plate is used to smooth the material on the top surface of the trolley, thus preventing the formation of fish-scale-like protrusions. A limit switch is used to monitor the tilt angle of the trolley guardrail, thereby promptly alerting the trolley to deviation or the guardrail to tilt.

[0006] This utility model is achieved through the following technical solution: a pressing system for a sintering trolley, comprising a pressing roller extending along the width direction of the trolley, a side guard roller located on the side of the pressing roller, and a bracket hinged to both the side guard roller and the pressing roller. The top surface of the side guard roller is adapted to and connected to the small-diameter end of a circular wheel. The cross-section of the circumferential surface of the circular wheel is an inwardly convex arc shape. The large-diameter end of the circular wheel extends to the top edge of the trolley.

[0007] In use, the trolley moves from front to back. The pressure rollers first press the material on the top surface of the trolley. During the compaction process, material pushed to the sides is pressed downwards by the circular rollers on the side guard rollers before it spills over the guardrail, keeping it close to the inner side of the guardrail and reducing spillage from the top of the guardrail. Simultaneously, the side guard rollers also act as a mechanical limiter when the trolley guardrail tilts excessively, preventing it from scraping against the igniter above.

[0008] Preferably, the bracket is also provided with a scraper plate located at the rear end of the pressure roller and used for scraping materials from the platform cart.

[0009] This preferred solution uses a scraper plate to smooth the material on the top surface of the trolley. When the pressure roller presses down large particles that have segregated on the side, the scraper plate that follows can further smooth the compacted surface, completely eliminating any fish-scale-like surface that may be generated, and ensuring that the material surface is flat and uniform.

[0010] Preferably, the bracket has two V-shaped pressure plates that are arranged along the width of the trolley. The front end of the pressure plates is hinged to the bracket, and the pressure rollers are shaft-connected to the two pressure plates. A zipper is fixed to the rear end of the pressure plates, and a scraper plate is fixed between the two zippers.

[0011] This preferred solution uses a pressure plate and a zipper to fix the pressure roller and scraper plate on the bracket. The V-shaped design of the pressure plate makes it easy to adjust the height of the pressure roller by selecting its installation position.

[0012] Preferably, the cross-section of the scraper plate is a downwardly convex arc surface. This preferred embodiment, by setting the arc surface, facilitates smoothing the fish-scale-like surface of the material.

[0013] Preferably, a fire baffle is provided at the upper end of the pressure plate, and a fixed plate is fixedly connected to the fire baffle between the pressure roller and the scraper plate. A vertical rod is detachably connected to the pressure plate and passes through the fixed plate along the height direction. A support plate is fixedly connected to the vertical rod at the lower end of the fixed plate, and a first spring is sleeved on the vertical rod between the support plate and the fixed plate.

[0014] When this solution is in use, the first spring extends downwards, applying downward pressure to the pressure plate, thereby increasing the force of the pressure roller on the material and improving the pressing effect.

[0015] Preferably, the side roller and the round wheel share a common shaft connected to the base, the base is slidably connected to the bracket, and the bracket is also provided with a second spring that drives the base to move in the direction of the trolley.

[0016] In this preferred embodiment, the second spring pushes the side stop roller onto the trolley, thereby ensuring that the circular wheel extends directly above the trolley.

[0017] Preferably, the swing arm is also provided with a limit switch located at the rear end of the side guard roller, and the gap between the probe of the limit switch and the outer side of the trolley side panel is greater than the gap between the side guard roller and the side panel.

[0018] Under normal circumstances, the limit switch does not contact the trolley side plate during use. The side plate passes through the igniter during use, and the sintered ore is ignited. The trolley also undergoes thermal changes. After repeated burning and cooling, the bolts of the side plate will bend and deform. The side plate can only deform and tilt outwards, that is, the trolley side plate tilts. Due to the tilt, the trolley baffle touches the probe of the limit switch, and the limit switch immediately triggers a signal. This signal is directly connected to the central control system of the sintering machine, driving the sintering machine to stop urgently, thereby avoiding equipment damage and production accidents.

[0019] The beneficial effects of this utility model are as follows: by setting the round wheel, the material squeezed to the side is pressed down and compacted, so that it is tightly attached to the inner side of the guardrail, thereby reducing the phenomenon of material spillage at the top of the guardrail; the scraper plate is used to scrape the material on the top surface of the trolley to avoid the formation of fish scale-like protrusions; the limit switch is used to monitor the tilt angle of the trolley guardrail, thereby timely reminding the trolley to deviate or the guardrail to tilt. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a diagram showing the structure of this utility model in use; Figure 4 This is a magnified view of the side guard rollers. As shown in the figure: 1. Trolley, 2. Support frame, 3. Side roller, 4. Pressure plate, 5. Material pressure roller, 6. Fire baffle, 7. Fixing plate, 8. Vertical rod, 9. Zipper, 10. Scraper plate, 11. Round wheel, 12. Limit switch, 13. First spring, 14. Second spring, 15. Base, 16. Baffle, 17. Side rails of trolley, 18. Round wheel. Detailed Implementation

[0021] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0022] See attached document Figure 1-4 This utility model discloses a pressing system for a sintering trolley, including a pressing roller 5 extending along the width direction of the trolley. The pressing roller 5 is located at the upper end of the trolley, but when the trolley passes under the pressing roller 5, the pressing roller 5 flattens the material on the trolley. The pressing roller 5 is made of high-strength thick-walled seamless steel pipe and is hinged to the support 2 through a bearing seat. The support 2 is welded to the main beam of the sintering machine.

[0023] The rear end of the pressure roller 5 is provided with a scraper plate 10. The projection of the scraper plate 10 in the width direction of the trolley is a downward convex arc shape, that is, the cross section of the scraper plate 10 is a downward convex arc surface.

[0024] Two V-shaped pressure plates 4 are hinged to the support 2 along the width direction of the trolley. The front end of the pressure plate 4 is hinged to the support 2. Two bearing seats are fixed to the two pressure plates 4. The pressure shaft of the pressure roller 5 is axially connected to the two bearing seats. A zipper 9 is fixed to the rear end of the pressure plate 4. The scraper plate 10 is fixed between the two zippers 9.

[0025] A fire baffle plate 6 is provided at the upper end of the pressure plate 4. A fixed plate 7 is fixedly connected to the fire baffle plate 6 between the pressure roller 5 and the scraper plate 10. A vertical rod 8 is detachably connected to the pressure plate 4, passing through the fixed plate 7 along the height direction. A support plate located at the lower end of the fixed plate 7 is fixedly connected to the vertical rod 8. A first spring 13 is sleeved on the vertical rod 8 between the support plate and the fixed plate 7. The first spring 13 provides a downward thrust to the pressure plate 4 by pushing the support.

[0026] The side of the pressure roller 5 is also provided with a side stop roller 3. The top surface of the side stop roller 3 is adapted to and connected to the small diameter end of the circular wheel. The cross section of the circumferential surface of the circular wheel is an inwardly convex arc. The large diameter end of the circular wheel extends to the top of the edge of the trolley. The side stop roller 3 and the circular wheel share a rotating shaft, which is connected to the base 15. A sliding rod is fixedly connected to the base 15. The bracket 2 is provided with a sliding tube for the sliding rod to be inserted and slid. The sliding rod slides in the sliding tube, so that the base 15 slides on the bracket 2 along the width direction of the trolley. A baffle 16 is fixedly connected to the sliding tube. The base 15 is located between the baffle 16 and the trolley. A second spring 14 is sleeved on the sliding tube and located between the baffle 16 and the base 15. A second spring 14 that pushes the base 15 to move toward the trolley is fixedly connected to the sliding tube.

[0027] Under the force of the second spring 14, the side roller 3 maintains constant contact with the upper outer side of the trolley sideboard, effectively compacting the material while accommodating normal swaying of the sideboard. The limit switch 12 is mounted on the base 15 of the side roller 3. Adjusting its probe position ensures that the gap between the probe of the limit switch 12 and the outer side of the trolley sideboard is greater than the gap between the side roller 3 and the sideboard. When the tilt of the sideboard abnormally increases and first touches the limit switch 12, the system will alarm and stop.

[0028] This device is installed after the nine-roller feeder and before the igniter. When the trolley carrying the sintering mixture passes by, the material surface is first compacted by the pressure roller 5, and then smoothed by the scraper plate 10; the material squeezed to the side is then compacted onto the inner side of the guard plate by the side roller 3 that follows immediately. The entire system works in concert to ensure that the entire material surface on the trolley is flat and dense and uniform, laying a solid foundation for subsequent high-quality sintering.

[0029] Specifically, see Appendix Figure 1 The left side is the front, and the right side is the back. The trolley moves from front to back.

[0030] When in use, this utility model effectively eliminates material segregation on the side of the trolley through the cooperation of the pressure roller 5 and the side guard roller 3, making the air permeability of the material layer more uniform, thereby producing high-quality sintered ore with stable composition and high strength, thus significantly improving the sintering quality.

[0031] The reduction in edge air leakage significantly lowers the power consumption of the main exhaust fan. At the same time, the more uniform sintering process also greatly reduces the consumption of solid fuel coke powder, thereby achieving a reduction in energy consumption.

[0032] The uniform sintering process avoids over-burning at the edges and raw material in the middle, significantly reducing the return rate, improving the yield, reducing production costs, and effectively minimizing the return rate.

[0033] The dual design of the side guard roller 3 and the limit switch 12 not only prevents equipment scratching accidents, but also provides timely alarm and shutdown, protecting the safety of large equipment and avoiding serious production interruptions.

[0034] The combination of vertical rod 8, fixed plate 7, and pressure plate 4 enables the equipment to adapt to production processes with different material layer thicknesses. The elastically supported side rollers 3 can adapt to the normal fluctuations of the trolley sideboard, ensuring the stable and effective operation of the system under different working conditions.

[0035] Of course, the above description is not limited to the examples above. Technical features not described in this utility model can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A pressing system for a sintering trolley, characterized in that: It includes a pressure roller (5) extending along the width of the trolley, a side roller (3) located on the side of the pressure roller (5), and a bracket (2) hinged to both the side roller (3) and the pressure roller (5). The top surface of the side roller (3) is adapted to and connected to the small diameter end of the circular wheel. The cross section of the circumferential surface of the circular wheel is an arc shape that bulges inward. The large diameter end of the circular wheel extends to the top edge of the trolley.

2. The pressing system for a sintering trolley according to claim 1, characterized in that: The bracket (2) is also provided with a scraper plate (10) located at the rear end of the pressure roller (5) and used for scraping the material on the platform cart.

3. The pressing system for a sintering trolley according to claim 2, characterized in that: Two V-shaped pressure plates (4) are hinged on the bracket (2) and arranged along the width direction of the trolley. The front end of the pressure plate (4) is hinged to the bracket (2). The pressure roller (5) is axially connected to the two pressure plates (4). A zipper (9) is fixed to the rear end of the pressure plate (4). The scraper plate (10) is fixed between the two zippers (9).

4. The pressing system for a sintering trolley according to claim 2 or 3, characterized in that: The cross-section of the scraper plate (10) is a downwardly convex arc surface.

5. The pressing system for a sintering trolley according to claim 3, characterized in that: The pressure plate (4) is provided with a fire baffle plate (6) at its upper end. A fixed plate (7) is fixedly connected to the fire baffle plate (6) between the pressure roller (5) and the scraper plate (10). A vertical rod (8) is detachably connected to the pressure plate (4) and passes through the fixed plate (7) along the height direction. A support plate is fixedly connected to the vertical rod (8) at the lower end of the fixed plate (7). A first spring (13) is sleeved on the vertical rod (8) between the support plate and the fixed plate (7).

6. The pressing system for a sintering trolley according to claim 1, characterized in that: The side roller (3) and the round wheel share a rotating shaft connected to the base (15). The base (15) is slidably connected to the bracket (2). The bracket (2) is also provided with a second spring (14) that drives the base (15) to move in the direction of the trolley.

7. The pressing system for a sintering trolley according to claim 6, characterized in that: The base (15) is also provided with a limit switch (12) located at the rear end of the side roller (3). The gap between the probe of the limit switch (12) and the outer side of the trolley rail is greater than the gap between the side roller (3) and the rail.

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