Sintered material level flattening and pressing device

Abstract

The invention relates to a sintering material level flattening and pressing device, which comprises a support frame arranged between sintering machine frameworks and a material flattening mechanism, and is characterized in that the material flattening mechanism is arranged between a nine-roller distributing device and an igniter along the running direction of a sintering trolley, and comprises a material flattening device and a material pressing device; the material flattening device is arranged on the inner side of the sintering machine framework and comprises a lifting mechanism, a servo electric cylinder, a plurality of motors, a plurality of pin-swing speed reducers and material flattening gear teeth, and the material pressing device is arranged on the outer side of the sintering machine framework. Comprising two material pressing plate supports, a material pressing adjusting lead screw, a hand wheel, a hanging bracket, a middle material pressing plate, an edge material pressing plate and an edge material pressing plate adjusting lead screw. The material flattening device has the advantages that the rotating material flattening teeth of the material flattening device flatten a mixture, the thickness of a material layer can be consistent, the upper surface of the mixture is compacted by the material pressing device, and the situation that when a trolley enters an igniter, materials on the material surface are blown to float under the action of the positive flame pressure of the igniter, and the ignition effect is affected is prevented.

Description

Technical Field

[0001] The invention belongs to the field of sintering production technology in the metallurgical industry, in particular to a sintering material surface flattening and pressing device. Background Art

[0002] The sintering machine is suitable for the sintering operation of large-scale ferrous metallurgical sintering plants. It is the main equipment in the exhaust sintering process. It can sinter concentrate powder and rich ore powder of different components and different particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. The sintering machine mainly includes a sintering machine trolley, a feeding device and an ignition furnace located at the front end of the trolley, a discharging device located at the rear end of the trolley, a plurality of sintering bellows located at the bottom of the trolley, a main flue connected to each sintering bellows, a main electrostatic precipitator connected to the outlet end of the main flue, a main exhaust fan connected to the outlet end of the main electrostatic precipitator, and a flue gas desulfurization device and a chimney connected to the outlet end of the main exhaust fan.

[0003] In the sintering production process, the sintering machine leveler plays the role of leveling and lightly pressing the material surface, and is an indispensable and important device in the material distribution process. The mixed material is evenly distributed on the sintering trolley through the wide belt feeder and the nine-roller distributor. Installing the leveler between the nine-roller distributor and the igniter can make the trolley material surface level and improve the permeability of the material layer, thereby improving the production and quality of the sintered ore.

[0004] Most of the existing levelers use round roller levelers or vertically installed scraper levelers to level the material surface on the sintering trolley. Although the material surface is leveled, the problem it brings is that the material layer is either pressed too tightly or too loose, and the edge effect near the trolley railing is difficult to eliminate. These directly affect the sintering process and are not conducive to increasing production and efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a sintering material surface leveling and pressing device.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: The present invention discloses a sintering material surface leveling and pressing device, comprising a sintering machine frame, a support frame and a material leveling mechanism, wherein the material leveling mechanism comprises a material leveling device arranged between a nine-roller distributor and an igniter along the running direction of the sintering trolley and a material pressing device connected to the material leveling device through a material pressing plate bracket. The flat material device is arranged on the inner side of the sintering machine frame, close to the nine-roller distributor, and the pressing device is arranged behind the flat material device, close to the igniter. The flat material device comprises a lifting mechanism, a servo electric cylinder, a plurality of motors, a needle-swing reducer and flat material gear teeth, the lifting mechanism comprises an upper fixed frame, a lower chassis and a longitudinal lifting slide bar, the upper fixed frame is fixed to the top of the support frame, the longitudinal lifting slide bar comprises four longitudinal lifting slide bars, the upper fixed frame is provided with a servo electric cylinder mounting hole and a lifting slide bar mounting hole with a bushing, there are two servo electric cylinders, the rod head of the servo electric cylinder passes through the servo electric cylinder mounting hole on the upper fixed frame, the upper part is fixedly connected to the upper fixed frame by bolts and retaining rings, the lower rod head is hinged to the hinge support arranged on the lower chassis by a pin shaft, the bottoms of the four longitudinal lifting slide bars are fixedly connected to the lower chassis by bolts, and the upper ends respectively pass through the lifting slide bar mounting holes to be slidably connected to the upper fixed frame; A plurality of shaft holes are opened at equal distances on the lower chassis, and the output shafts of a plurality of motors and cycloidal reducers are respectively installed on the lower chassis through the shaft holes and fastened with bolts, and a plurality of flat material gear teeth are respectively connected with the output shaft keys of each cycloidal reducer; The pressing device comprises a pressing adjusting screw, a hand wheel, a hanger, a middle pressing plate, an edge pressing plate and an edge pressing plate adjusting screw. One end of the press plate bracket is fixedly connected to the two ends of the lower chassis of the flat material device through bolts, and the other end is fixed to the upper part of the two press adjustment screws. A press adjustment screw insertion hole is opened on the hanger. The lower end of the press adjustment screw passes through the through hole and is fixed to the hanger through a nut, and the upper end is fixedly connected to the hand wheel. The middle press plate is fixedly connected to the lower end of the hanger, and the edge press plate is fixedly connected to the hanger through the edge press plate adjustment screw.

[0007] Preferably, the flat material wheel teeth are claw-shaped flat material wheel teeth.

[0008] Preferably, the claw flat material gear teeth are four-claw flat material gear teeth, every two flat material gear teeth form a group to form a cross-shaped flat material gear teeth, and the rotation directions of every two groups of flat material gear teeth are opposite.

[0009] Preferably, the edge pressing plate is 50mm-60mm lower than the middle pressing plate.

[0010] The advantages of the present invention are: The present invention utilizes the rotating leveling gear teeth of the leveling device to level the mixed material. The rotation directions of every two groups of leveling gear teeth are opposite, so that the thickness of the material layer can be made consistent. Then the pressing device is utilized to compact the mixed material to prevent the material on the material surface from being blown up and floating under the action of the positive pressure of the flame of the igniter when the trolley enters the igniter, thereby affecting the ignition effect.

[0011] The design of the edge press plate is to press the material at the edge more to increase the density of the edge material, with the aim of reducing the edge effect during the sintering process.

[0012] The invention has the characteristics of good flattening effect, high efficiency, strong adaptability, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 for Figure 1 AA section view.

[0015] Figure 3 It is a structural diagram of the lifting mechanism.

[0016] Figure 4 for Figure 1 P-direction view.

[0017] Figure 5 for Figure 4 BB cross-sectional view.

[0018] Figure 6 for Figure 4 Enlarged view of part A.

[0019] Figure 7 It is a schematic diagram of cross-shaped flat material gear teeth. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1-Figure 7 As shown, a sintering material surface leveling device and a material pressing device of the present invention include a sintering machine frame, a support frame 4 is provided between the sintering machine frame 1, and a leveling and pressing mechanism, characterized in that the leveling and pressing mechanism includes a leveling device 2 arranged between a nine-roller distributor and an igniter along the running direction of the sintering trolley and a material pressing device 3 connected to the leveling device 2 through a material pressing plate bracket 5, the leveling device 2 is arranged on the inner side of the sintering machine frame 1 close to the nine-roller distributor side, and the material pressing device 3 is arranged behind the leveling device, close to the igniter side, like Figure 2 and Figure 3As shown, the flat material device 2 includes a lifting mechanism 2-2, a servo electric cylinder 2-1, a plurality of motors and a pinion reducer 2-3 and a flat material gear 2-4. The lifting mechanism 2-2 includes an upper fixed frame 2-2-1, a lower chassis 2-2-2 and a longitudinal lifting slide bar 2-2-3. The upper fixed frame 2-2-1 is fixed on the top of the support frame 4. The longitudinal lifting slide bar 2-2-3 is four longitudinal lifting slide bars. The upper fixed frame 2-2-1 is provided with a servo electric cylinder mounting hole and a lifting slide bar mounting hole with a bushing. There are two servo electric cylinders 2-1, the rod heads of the servo electric cylinders 2-1 pass through the servo electric cylinder mounting holes on the upper fixed frame 2-2-1, the upper part is fixedly connected to the upper fixed frame 2-2-1 by bolts and retaining rings, the lower rod heads are hinged to the hinge support 2-2-4 arranged on the lower chassis 2-2-2 by pins 2-2-5, the bottoms of the four longitudinal lifting slide bars 2-2-3 are fixedly connected to the lower chassis 2-2-2 by bolts, and the upper ends pass through the lifting slide bar mounting holes and are slidably connected to the upper fixed frame 2-2-1; The lower chassis 2-2-2 is provided with a plurality of axial holes at equal distances, and the output shafts of a plurality of motors and a cycloidal reducer 2-3 are respectively installed on the lower chassis 2-2-2 through the axial holes and fastened with bolts, and a plurality of flat material gear teeth 2-4 are respectively connected with the output shaft keys of each cycloidal reducer; the flat material gear teeth 2-4 are claw-shaped flat material gear teeth, and the claw flat material gear teeth are four-claw flat material gear teeth, and each two flat material gear teeth form a group, and the rotation directions of each two groups of flat material wheel gears are opposite, and the flat material gear teeth of this structure have a better flattening effect; the flattening direction of each group of flat material wheel gears is flat toward the trolley railing, and the purpose is to flatten the high material to the trolley railing. Because the trolley plate rail 6 is the edge of the material, the material is not as smooth as the middle material when the edge is laid, so the edge of the trolley is prone to lack of material. In addition, after passing through the igniter, the material at the edge of the trolley shrinks, and a short circuit of air leakage occurs here. A large amount of wind passes through the edge of the trolley, which seriously destroys the distribution of air volume and causes a loss of sintered ore production and quality. The servo electric cylinder 2-1 is used to adjust the lifting mechanism, and then adjust the distance between the flat material wheel teeth 2-4 and the material surface according to the height of the material surface. 7 in the figure is the sintered material.

[0022] The pressing device 3 of the present invention comprises a pressing adjusting screw 3-1, a hand wheel, a hanger 3-2, a middle pressing plate 3-3, an edge pressing plate 3-4 and an edge pressing plate adjusting screw 3-5. One end of the press plate bracket 5 is fixedly connected to the two ends of the lower chassis 2-2-2 of the flat material device by bolts, and the other end is fixed to the upper part of the two press adjustment screws 3-1. A press adjustment screw insertion hole is opened on the hanger 3-2. The lower end of the press adjustment screw 3-1 passes through the through hole and is fixed to the hanger by a nut, and the upper end is fixedly connected to the hand wheel. The middle press plate 3-3 is fixedly connected to the lower end of the hanger 3-2, and the edge press plate 3-4 is fixedly connected to the hanger 3-2 through the edge press plate adjustment screw 3-5.

[0023] After the material leveling device 2 has leveled the material, it enters the material pressing stage. By adjusting the material pressing adjusting screw 3-1, the middle material pressing plate 3-3 applies pressure to the material surface to make the material surface denser. This can prevent the fuel on the material surface from being easily sprayed away and wasted under the spray pressure of the ignition nozzle after entering the igniter. On the other hand, the material surface has a large density, and the heat energy of the ignited material surface is easy to accumulate heat energy after entering the igniter. In addition, the edge pressure plate 3-4 is 50mm-60mm lower than the middle pressure plate 3-3. The purpose is that under the action of the edge pressure plate, the density of the material at the edge is intentionally denser than that in the middle. Because the material shrinks after leaving the igniter at the edge, a gap is generated between the material and the fence, and a large amount of wind enters from here, causing energy waste. After using the disc flattening and pressure device, there is an edge pressure plate, the density of the edge material is large, and the gap caused by the shrinkage after leaving the igniter is also very small, which can greatly reduce the edge effect, which is of great benefit to the output and quality of sintered ore, improves the output and quality of sintered ore, and reduces the air leakage rate of the sintering machine.

Claims

1. A sintering material surface leveling and pressing device, comprising a sintering machine frame, a support frame arranged between the sintering machine frames, and a material leveling mechanism, characterized in that: The material flattening mechanism comprises a material flattening device arranged between the nine-roller distributor and the igniter along the running direction of the sintering trolley and a material pressing device connected to the material flattening device through a material pressing plate bracket. The flat material device is arranged near the nine-roller distributor, and the pressing device is arranged behind the flat material device, near the igniter. The flat material device is arranged on the inner side of the sintering machine skeleton near the nine-roller feeder, and includes a lifting mechanism, a servo electric cylinder, a plurality of motors, a needle-swing reducer and flat material gear teeth. The lifting mechanism includes an upper fixed frame, a lower chassis and a longitudinal lifting slide bar. The upper fixed frame is fixed to the top of the support frame. The longitudinal lifting slide bar is four longitudinal lifting slide bars. The upper fixed frame is provided with a servo electric cylinder mounting hole and a lifting slide bar mounting hole with a bushing. There are two servo electric cylinders. The rod head of the servo electric cylinder passes through the servo electric cylinder mounting hole on the upper fixed frame. The upper part is fixedly connected to the upper fixed frame by bolts and retaining rings. The lower rod head is hinged to the hinge support arranged on the lower chassis through a pin shaft. The bottoms of the four longitudinal lifting slide bars are fixedly connected to the lower chassis by bolts, and the upper ends pass through the lifting slide bar mounting holes to be slidably connected to the upper fixed frame. A plurality of shaft holes are opened at equal distances on the lower chassis, and the output shafts of a plurality of motors and cycloidal reducers are respectively installed on the lower chassis through the shaft holes and fastened with bolts, and a plurality of flat material gear teeth are respectively connected with the output shaft keys of the cycloidal reducers; The pressing device comprises a pressing adjusting screw, a hand wheel, a hanger, a middle pressing plate, an edge pressing plate and an edge pressing plate adjusting screw. One end of the press plate bracket is fixedly connected to the two ends of the lower chassis of the flat material device through bolts, and the other end is fixed to the upper part of the two press adjustment screws. A press adjustment screw insertion hole is opened on the hanger. The lower end of the press adjustment screw passes through the through hole and is fixed to the hanger through a nut, and the upper end is fixedly connected to the hand wheel. The middle press plate is fixedly connected to the lower end of the hanger, and the edge press plate is fixedly connected to the hanger through the edge press plate adjustment screw.

2. The sintering material surface leveling and pressing device according to claim 1, characterized in that: The flat material wheel teeth are claw-shaped flat material wheel teeth.

3. The sintering material surface leveling and pressing device according to claim 2, characterized in that: The flat material gear teeth are four-claw flat material gear teeth, each two flat material gear teeth form a group, and the rotation directions of each two groups of flat material gear teeth are opposite.

4. The sintering material surface leveling and pressing device according to claim 1, characterized in that: The edge pressing plate is 50mm-60mm lower than the middle pressing plate.

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