Sintered material layer pressing combination device

Abstract

The utility model relates to the technical field of metallurgy sintering, in particular to a sintering material layer pressing combined device. Comprising a front compression roller, a rear compression roller, a herringbone scraper and a rotating rod, the front compression roller is installed at the front end of the advancing direction of a trolley through the rotating rod, the rear compression roller is installed at the rear end of the advancing direction of the trolley through the rotating rod, the herringbone scraper is arranged in the middle of the device and between the front compression roller and the rear compression roller, the front compression roller is a cylinder, and the rotating rod penetrates through the middle of the front compression roller. The rear compression rollers are two circular rollers, the rotating rod penetrates through the middle of the rear compression rollers, the bearings are installed at the two ends of the rotating rod and used for connection, the herringbone scraper is arranged on the portion between the front compression roller and the rear compression rollers, and an opening of the herringbone scraper faces the front compression roller. The rotating rods are two long round rods with the same diameter as the central holes of the front pressing roller and the rear pressing roller; according to the sintering material layer pressing combination device, the edge effect is restrained, the generation amount of a sintering ore liquid phase is facilitated, and the sintering drum index is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical sintering, and particularly relates to a combined pressing device for a sintering material layer. Background Art

[0002] In the sintering process of the metallurgical industry, a process of mixing raw materials such as iron ore powder, fuel, and flux, and sintering them into massive sinter at high temperature. The formation and control of the sintering material layer are key steps in the sintering process, directly affecting the quality of sinter and the energy efficiency of the sintering process.

[0003] The main iron material in current sintering batching is imported iron ore coarse powder, and the proportion of imported iron ore coarse powder added is high, with a proportion above 70%. Due to its coarser particle size than domestic ore powder, the air permeability of the sintering mixture material layer is better, the vertical sintering speed of the material layer is fast, and the mineralization time of the sinter on the sintering machine is shortened, resulting in insufficient formation of sintering liquid phase, which is not conducive to improving the drum index of sinter.

[0004] Therefore, there is an urgent need to design a combined pressing device for a sintering material layer to solve the problems of shortened mineralization time, insufficient formation of liquid phase, and not being conducive to improving the drum index. Summary of the Utility Model

[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a combined pressing device for a sintering material layer.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a combined pressing device for a sintering material layer, characterized in that it includes a rotating rod divided into a front rotating rod and a rear rotating rod, a front pressing roller, a rear pressing roller, a scraper, and a rotating rod. The front pressing roller is installed at the front end in the traveling direction of the trolley through the front rotating rod, the rear pressing roller is installed at the rear end in the traveling direction of the trolley through the rear rotating rod, the scraper is arranged in the middle of the device, and the scraper is located between the front pressing roller and the rear pressing roller.

[0007] Specifically, the front pressing roller is a cylinder, the rotating rod passes through the middle of the front pressing roller, and both ends of the front rotating rod are connected to the front bearing seats.

[0008] Specifically, the rear pressing roller is two circular rollers, the rear rotating rod passes through the middle of the rear pressing roller, and both ends of the rotating rod are also equipped with rear bearing seats for connection.

[0009] Specifically, the scraper is arranged in the part between the front pressing roller and the rear pressing roller, the scraper is in a herringbone shape, and the opening direction of the scraper faces the front pressing roller.

[0010] Specifically, the front rotating rod and the rear rotating rod respectively correspond to the center hole sizes of the front pressing roller and the rear pressing roller.

[0011] Specifically, the front bearing block is rotatably connected to both ends of the front rotating rod. The front bearing block is installed at the bottom of the trolley. The rear bearing block is connected to both ends of the rear rotating rod. The rear bearing block is installed at the bottom of the trolley. The front bearing block and the rear bearing block.

[0012] The utility model has the following beneficial effects:

[0013] The sintered material layer pressing combination device designed by the utility model: 1. Press the material on both sides of the material surface of the sintering trolley to inhibit the edge effect. 2. For sintering mainly with coarse iron ore, through pressing the material surface, the gas flow distribution in the sintering process tends to be reasonable, making the mixture relatively dense, reducing the air permeability and vertical sintering speed of the mixture. It is beneficial to the generation amount of the liquid phase of the sintered ore. 3. The investment cost is low, and the purpose of improving the sintering drum index can be achieved without spending a large amount of money, creating conditions for the stable and smooth operation of the blast furnace. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the sintered material layer pressing combination device.

[0015] In the figure: 1 - front pressure roller, 1.1 - front rotating rod, 1.2 - front bearing block; 2 - rear pressure roller, 2.1 - rear rotating rod, 2.2 - rear bearing block; 3 - scraper; 4 - trolley. Specific Embodiments

[0016] Hereinafter, the technical solutions in the embodiments of the present utility model will be further described clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] Embodiment 1:

[0018] As Figure 1 shown, a sintered material layer pressing combination device is characterized in that it includes a front pressure roller 1, a rear pressure roller 2, a scraper 3 and a rotating rod. The front pressure roller 1 is installed at the front end in the traveling direction of the trolley 4 through the front rotating rod 1.1. The rear pressure roller 2 is installed at the rear end in the traveling direction of the trolley 4 through the rear rotating rod 2.1. The scraper 3 is arranged in the middle of the device, and the scraper 3 is located between the front pressure roller 1 and the rear pressure roller 2.

[0019] The front pressure roller 1 is installed at the front section in the traveling direction of the trolley 4 through the front rotating rod 1.1 and the front bearing block 1.2. The front pressure roller 1 is used to further press and compact the leveled material. The rear pressure roller 2 is installed at the rear section in the traveling direction of the trolley 4 through the rear rotating rod 2.1 and the rear bearing block 2.2, and is used to compact the materials on both sides to inhibit the edge effect.

[0020] The scraping device 3 is arranged between the front pressure roller 1 and the rear pressure roller 2. The scraping device 3 is in a herringbone shape, and the opening direction of the scraping device 3 faces the front pressure roller 1. The scraping device 3 is used to scrape the material surface flat, eliminating the influence caused by the fish-scale shape.

[0021] Embodiment 2: The specific implementation steps of adopting the structural form of Embodiment 1.

[0022] Press-roller feeding is adopted between the feeder and the ignition chamber. Bearings are installed at both ends of the pressure roller. Under the action of the frictional force with the material surface, the pressure roller rotates in the forward movement direction of the trolley 4, so as to achieve the purpose of pressing the material and leveling the material surface. The materials on both sides of the trolley 4 are pressed down by 20 - 30 mm to inhibit their edge effects, and the materials in the middle are pressed down by 10 - 20 mm. During the use process, the material surface in the middle will show a slight fish-scale shape, which affects the ignition quality of the material surface. After press-roller feeding, the scraping device 3 is used to scrape the material surface flat, eliminating the influence caused by the fish-scale shape. After pressing the material, the gas flow distribution in the sintering process tends to be reasonable, solving the problem of raw materials on both sides of the trolley 4, making the mixed material more dense, reducing the air permeability of the mixed material, thereby achieving the purpose of reducing the vertical sintering speed and improving the drum index of sinter.

[0023] The present invention is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, all fall within the protection scope of the present invention.

[0024] The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to this process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sintering material layer pressing material assembly device, characterized in that: It includes a front pressure roller, a rear pressure roller, a scraper and a rotating rod. The rotating rod is divided into a front rotating rod and a rear rotating rod. The front pressure roller is installed at the front end of the trolley in the travel direction through the front rotating rod, and the rear pressure roller is installed at the rear end of the trolley in the travel direction through the rear rotating rod. The scraper is arranged in the middle of the device, and the scraper is located between the front pressure roller and the rear pressure roller.

2. The sintering material layer pressing assembly device according to claim 1, characterized in that: The front pressure roller is a cylinder, a rotating rod passes through the middle of the front pressure roller, two ends of the front rotating rod are connected to the front bearing seat, the front bearing seat is rotatably connected to the two ends of the front rotating rod, and the front bearing seat is installed at the bottom of the trolley.

3. The sintering material layer pressing assembly device according to claim 1, characterized in that: The rear pressure rollers are two circular rollers, a rear rotating rod passes through the middle of the rear pressure rollers, and rear bearing seats are also installed at both ends of the rotating rod for connection.

4. The sintering material layer pressing assembly device according to claim 1, characterized in that: The scraper is arranged at the middle part of the front pressure roller and the rear pressure roller. The scraper is in a herringbone shape, and the opening direction of the scraper faces the front pressure roller.

5. The sintering material layer pressing assembly device according to claim 1, characterized in that: The front rotating rod and the rear rotating rod correspond to the sizes of the center holes of the front pressing roller and the rear pressing roller respectively.

6. The sintering material layer pressing assembly device according to claim 3, characterized in that: The rear bearing seat is connected to the two ends of the rear rotating rod, and the rear bearing seat is installed at the bottom of the trolley.

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