Air-permeable punching device for sintered material layer

Abstract

The utility model provides a sintering material layer ventilation punching device which comprises a round roller and conical teeth evenly arranged on the round roller, the two ends of the round roller are rotationally connected with supports through rotating shafts respectively, and the two supports are fixed to the two sides of a trolley channel in front of a sintering machine head respectively. Tooth holder arrays are evenly arranged in the circumferential direction of the outer wall of the round roller and comprise tooth holders evenly arranged in the length direction of the round roller, and the conical teeth are detachably connected to the tooth holders. According to the utility model, different conical teeth can be replaced according to production requirements without being driven by external force to rotate, so that the efficiency of punching air holes is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sintering process equipment, and more specifically, to a sintering material layer permeable perforation device. Background Technology

[0002] Sintering is a crucial step in steel production. It involves mixing various powdered iron-containing raw materials with appropriate amounts of fuel, flux, and water, followed by pelletizing and then sintering on a sintering machine. This process causes a series of physicochemical changes, binding the mineral powder particles into briquettes. Currently, the sintering industry is beginning to promote thick-layer sintering. However, a prerequisite for thick-layer sintering is improving the permeability of the sintering bed. Generally, after the sintering trolley passes through the high-temperature furnace, the surface of the bed quickly forms a hard shell, which easily leads to poor permeability, high bed resistance (for a given bed thickness), excessively high bellows pressure, insufficient air supply, slow vertical sintering speed, and poor roasting reaction.

[0003] Many existing ventilation devices directly weld a certain number of conical teeth onto the roller, using the roller's own weight to press the conical teeth onto the material surface to make holes. The hole depth is fixed, and the conical teeth cannot be replaced. During use, they are prone to accumulating debris. If many conical teeth are damaged, they need to be re-welded when the machine is stopped, which is time-consuming and laborious. Some also require an external power source to drive the roller to rotate, which is costly. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a sintering material layer permeable drilling device, which can replace different bevel teeth according to production needs, and does not require external force to drive the rotation, thereby improving the efficiency of drilling permeable holes and reducing production costs.

[0005] This utility model provides a sintering material layer permeable perforation device, comprising a circular roller and conical teeth uniformly arranged on the circular roller, wherein...

[0006] The two ends of the circular roller are rotatably connected to the brackets via rotating shafts, and the two brackets are fixed on both sides of the trolley passage in front of the sintering machine head.

[0007] A toothed arrangement is uniformly provided along the circumference of the outer wall of the roller, the toothed arrangement including toothed seats uniformly provided along the length direction of the roller, and the bevel teeth are detachably connected to the toothed seats.

[0008] The tooth holder includes a fixed plate and a connecting plate welded perpendicularly to each other. The bottom edge of the fixed plate is welded to the circular roller, and the fixed plate is perpendicular to the central axis of the circular roller. The connecting plate is arranged radially along the circular roller. Two through holes are provided on the portion of the connecting plate above the top of the fixed plate. The center line connecting the two through holes is on the same plane as the fixed plate. The bevel tooth is installed to the connecting plate by bolts passing through the through holes.

[0009] The fixing plate is a right-angled trapezoidal plate. An arc-shaped opening is cut from the lower half of the straight waist side of the right-angled trapezoidal plate to the lower end of the oblique waist side. The upper half of the straight waist side is welded to the center line of the connecting plate. The center line connecting the two through holes is set on the center line of the connecting plate. The arc-shaped opening is attached to and welded to the outer wall of the roller.

[0010] The bevel gear includes a mounting base and a wedge-shaped tooth fixed to the upper part of the mounting base, and the mounting base is provided with a mounting hole corresponding to the through hole.

[0011] A slot is provided at the bottom center of the mounting base, and mounting holes are provided on the side walls of the mounting base on both sides of the slot. The connecting plate is inserted into the slot, and the two ends of the through hole are respectively aligned with the corresponding mounting holes and connected by bolts and nuts.

[0012] The bottom of the mounting base is close to the top of the fixing plate, and the width of the connecting plate is greater than the width of the mounting base.

[0013] The spacing between the tooth seats in the tooth seat arrangement is 200mm-300mm.

[0014] The number of rows of the toothed seats is 8.

[0015] The length of the roller is the same as the width of the trolley.

[0016] The bevel teeth insert into the material layer on the trolley by no more than 200 mm.

[0017] As described above, the sintering material layer permeable perforation device provided by this utility model includes a circular roller and toothed seats evenly arranged on the circular roller. The conical teeth are detachably connected to the toothed seats for easy replacement. The conical teeth of this utility model can be replaced at any time according to production and usage conditions without stopping the machine. The forward force of the trolley material surface drives the conical teeth to move forward on the material surface, thereby rotating the circular roller. Rows of conical teeth stably perforate the material surface, improving perforation efficiency, reducing production costs, and achieving better combustion sintering results. Attached Figure Description

[0018] Other objects and results of this invention will become more apparent and readily understood upon referring to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the sintering material layer permeable perforation device according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 AA section view;

[0021] Figure 3 This is a schematic diagram of the bevel gear according to an embodiment of the present utility model;

[0022] Figure 4 This is a front view of the bevel gear according to an embodiment of the present invention;

[0023] Among them, 1-round roller, 2-rotating shaft, 3-bracket, 4-conical tooth, 41-mounting seat, 42-wedge tooth, 43-mounting hole, 44-slot, 5-tooth seat, 51-fixing plate, 52-connecting plate, 53-through hole, 54-arc-shaped opening, 6-bolt, 7-nut, 8-cart;

[0024] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0025] This invention can be modified in various ways and has various embodiments, with specific embodiments illustrated in the accompanying drawings. However, this invention is not limited to this specific implementation and all modifications, equivalents, and substitutions falling within the spirit and technical scope of this invention are to be understood as included.

[0026] Ordinal terms such as "first," "second," etc., may be used to describe various constituent elements, but the constituent elements are not limited to these terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the claims of this utility model, a second constituent element may be named a first constituent element, and similarly, a first constituent element may be named a second constituent element. Terms and / or include combinations of multiple associated items or one of multiple associated items.

[0027] It should be understood that when referring to a constituent element being "connected" or "in contact" with other constituent elements, this includes not only cases where it is directly connected or in contact with other constituent elements, but also cases where other constituent elements exist between them. Conversely, when referring to a constituent element being "directly connected" or "directly in contact" with other constituent elements, it should be understood that no other constituent elements exist between them.

[0028] In the description of the embodiments, when it is stated that a certain component is formed "on or under" other components, "on or under" includes both two components that are in direct contact with each other and at least one other component that is configured to be formed between the two components. Furthermore, when expressed as "on or under", based on a certain component, it refers not only to the upper direction but may also include the lower direction.

[0029] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. Unless the context clearly specifies otherwise, singular expressions include plural expressions. In this application, terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0030] Unless otherwise defined, including technical or scientific terms, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Terms as defined in commonly used dictionaries should be interpreted in a meaning consistent with their meaning in the context of the relevant art, and should not be construed as having an ideal or overly formal meaning unless explicitly defined in this application.

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] like Figures 1-4 As shown in the figure, the sintering material layer permeable perforation device proposed in this embodiment can be used to pre-perforate the material in the sintering process of steel production before it enters the sintering machine to increase the permeability of the material during the sintering process. It can also be used in other metallurgical sintering processes.

[0033] This sintering material layer permeation and perforation device includes a circular roller 1 and conical teeth 4 evenly arranged on the circular roller 1. Both ends of the circular roller 1 are rotatably connected to supports 3 via rotating shafts 2. The two supports 3 are fixed on both sides of the trolley 8 passage in front of the sintering machine head. The circular roller 1 spans above the trolley 8, and the conical teeth 4 can be inserted into the material layer inside the trolley 8. As the trolley 8 moves forward, the conical teeth 4 on the circular roller 1 are driven to insert into the material layer one after another and move forward, pressing out holes in the material layer for permeation during sintering. Then, the trolley 8 enters the sintering machine. The circular roller 1 can be made of 45# steel pipe. The circular roller 1 rotates due to the driving force of the material when the trolley 8 moves, requiring no external force assistance.

[0034] The conical teeth 4 on the circular roller 1 can be arranged such that tooth seats are evenly arranged along the circumference of the outer wall of the circular roller 1. The tooth seat arrangement includes tooth seats 5 evenly arranged along the length direction of the circular roller 1. The conical teeth 4 are detachably connected to the tooth seats 5. If the conical teeth 4 are stuck with debris or damaged during use, the speed of the trolley 8 can be slowed down to allow the conical teeth 4 to cool appropriately without stopping the sintering machine, and the conical teeth 4 can be quickly replaced without affecting production and drilling. Conical teeth 4 of different specifications can also be made according to production conditions, making it easy to replace the conical teeth 4 according to the material layer conditions, and improving the drilling effect.

[0035] The number of toothed seats 5 in each row is determined according to the width of the trolley 8. The spacing between toothed seats 5 should be moderate, and the spacing can be 200mm-300mm to ensure the number of ventilation holes.

[0036] The diameter of the circular roller 1 and the number of rows of toothed seats are determined according to production conditions. It must be ensured that after the conical teeth 4 are installed, the conical teeth 4 of the previous row insert into the material layer, move stably forward with the trolley 8, and punch holes. Before the conical teeth 4 of the previous row leave the material surface, the adjacent conical teeth 4 of the following row can insert into the material surface, with each row of conical teeth 4 punching holes consecutively. In this embodiment, an 8-row toothed seat arrangement can be used.

[0037] The shape and length of the conical teeth 4 should ensure that the depth and width of the holes drilled in the material surface meet the requirements for air permeability. In this embodiment, the length of the conical teeth 4 can be about 440mm, and the maximum length of the conical teeth 4 inserted into the material layer can be 200mm.

[0038] In one specific embodiment of this utility model, the tooth base 5 may include a fixing plate 51 and a connecting plate 52 welded perpendicularly to each other. Both the fixing plate 51 and the connecting plate 52 are made of 45# steel plate with a thickness of about 6mm. The fixing plate 51 is used to weld to the circular roller 1. One end of the connecting plate 52 is flush with the fixing plate 51, and the other end of the connecting plate 52 is higher than the fixing plate 51, for detachably connecting the bevel tooth 4.

[0039] The bottom edge of the fixing plate 51 is welded to the circular roller 1, and the fixing plate 51 is perpendicular to the central axis of the circular roller 1. The connecting plate 52 is arranged radially along the circular roller 1, and two through holes 53 are provided on the part of the connecting plate 52 that is higher than the top of the fixing plate 51. The center line connecting the two through holes 53 is on the same plane as the fixing plate 51. The connecting plate 52 is evenly distributed around the circumference of the circular roller 1. After the conical teeth 4 are installed on the connecting plate 52, they are evenly distributed around the outer circumference of the circular roller 1, which can stably and evenly punch holes on the material surface.

[0040] The bevel gear 4 is installed to the connecting plate 52 by bolts 6 passing through two through holes 53. The connection of two sets of bolts and nuts can more stably connect the bevel gear 4.

[0041] In a specific embodiment of this utility model, in order to stably connect the toothed seat 5 with the circular roller 1, the fixing plate 51 can be a right-angled trapezoidal plate. An arc-shaped opening 54 is cut from the lower half of the straight waist side of the right-angled trapezoidal plate to the lower end of the inclined waist side. The upper half of the straight waist side is welded to the center line of the connecting plate 52. The center line connecting the two through holes 53 is set on the center line of the connecting plate 52. The arc-shaped opening 54 is attached to and welded to the outer wall of the circular roller 1.

[0042] The lower end of the fixed plate 51 is tightly welded to the outer wall of the roller 1 through the arc-shaped opening 54, making the weld firm and not prone to cracking. At the same time as the connecting plate 52 is welded to the fixed plate 51, the bottom end of the connecting plate 52 contacts and is welded to the roller 1, which enhances the firmness of the connecting plate 52.

[0043] In a specific embodiment of this utility model, in order to drill holes efficiently, the conical tooth 4 may include a mounting base 41 and a wedge-shaped tooth 42 fixed on the upper part of the mounting base 41. The mounting base 41 is provided with a mounting hole 43 corresponding to the through hole 53. The mounting base 41 is connected and fixed to the connecting plate 52 by bolts 6 and nuts 7.

[0044] The wedge-shaped teeth 42 can be made of heat-resistant chromium alloy steel. The wedge-shaped structure teeth have good balance and strength distribution, effectively bearing external loads and transferring them to the rotating shaft 2. The wedge-shaped structure teeth exhibit excellent resistance to pressure, bending, and shear forces, and have stronger penetrating power. The shape and size of the wedge-shaped teeth 42 can be selected according to the specific conditions of the material surface, allowing them to easily penetrate the sintering material layer and move with the material surface, thereby improving the permeability of the material layer.

[0045] In one specific embodiment of this utility model, a slot 44 is provided at the bottom center of the mounting base 41, and mounting holes 43 are provided on the side walls of the mounting base 41 on both sides of the slot 44. A connecting plate 52 is inserted into the slot 44, and the two ends of each through hole 53 are aligned with the corresponding mounting hole 43 and connected by bolts 6 and nuts 7.

[0046] The upper and lower mounting holes 43 correspond one-to-one with the two through holes 53 on the connecting plate 52. The connecting plate 52 is clamped in the middle of the mounting base 41 and is fastened by two sets of bolts and nuts, ensuring stable installation and preventing tilting during drilling.

[0047] In one specific embodiment of this utility model, to ensure a more stable installation of the conical teeth 4, after the mounting base 41 is installed, its bottom is close to the top of the fixing plate 51, which further limits the position of the conical teeth 4 and ensures that they will not be skewed during drilling. The width of the connecting plate 52 is greater than the width of the mounting base 41, and the slot 44 is a slot with openings on three sides. After the connecting plate 52 is inserted into the slot 44, its two side edges protrude from the slot 44, making the connection more stable.

[0048] In one specific embodiment of this utility model, the length of the circular roller 1 is the same as the width of the trolley 8, and the conical teeth 4 are evenly arranged in the width direction of the material surface of the trolley 8, which can ensure full perforation of the material surface.

[0049] In one specific embodiment of this utility model, a bearing is provided between the rotating shaft 2 and the bracket 3, which is beneficial to the smooth rotation of the rotating shaft 2.

[0050] This sintering material layer permeable perforation device can mechanically penetrate the surface hard shell of material layers of different thicknesses, leaving holes with a width of approximately 10mm-50mm and a depth of approximately 10mm-100mm on the surface of the material layer. This breaks the crust on the sintering material surface, thereby improving the permeability of the material layer and facilitating the control of negative pressure on the sintering material surface. At the same time, because the holes are evenly distributed on the material surface, the local internal stress on the material layer surface is greatly reduced, which largely solves the problem of surface cracking, makes the sintering exhaust airflow more uniformly distributed, and improves the sintering yield.

[0051] The sintering material layer permeability perforation device according to the present invention is described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the sintering material layer permeability perforation device proposed in the present invention without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A device for permeating and drilling sintered material layers, characterized in that, The toothed wheel comprises a circular roller and bevel gears uniformly arranged on the circular roller, wherein, Two ends of the circular roller are rotatably connected with supports through rotating shafts, and the two supports are fixed on both sides of a trolley passage in front of a sintering machine head. A tooth seat array is uniformly arranged along the outer wall of the circular roller in the circumferential direction, and the tooth seat array comprises tooth seats uniformly arranged along the length direction of the circular roller, and the bevel gears are detachably connected to the tooth seats.

2. The sintering material layer air permeation punching device according to claim 1, wherein The tooth seat comprises a fixed plate and a connecting plate which are perpendicular to each other, the bottom edge of the fixed plate is welded on the circular roller, and the fixed plate is perpendicular to the central axis of the circular roller, the connecting plate is arranged along the radial direction of the circular roller, two through holes are arranged on the part of the connecting plate which is higher than the top end of the fixed plate, and the center line of the two through holes is on the same plane as the fixed plate. The bevel gears are installed on the connecting plate through bolts passing through the through holes.

3. The sintering material layer air permeation punching device according to claim 2, wherein The fixed plate is a right-angled trapezoidal plate, an arc-shaped opening is cut from the lower half of the straight leg to the lower end of the inclined leg of the right-angled trapezoidal plate, the upper half of the straight leg is welded with the center line of the connecting plate, and the center line of the two through holes is arranged on the center line of the connecting plate. The arc-shaped opening is fitted and welded on the outer wall of the circular roller.

4. The sinter bed air permeation and perforation apparatus of claim 2 wherein, The bevel gear comprises a mounting seat and a wedge-shaped tooth fixed on the upper part of the mounting seat, and a mounting hole corresponding to the through hole is arranged on the mounting seat.

5. The sinter bed air permeation and perforation apparatus of claim 4 wherein, A slot is upwardly formed in the center of the bottom of the mounting seat, the mounting holes are arranged on the side walls of the mounting seat on both sides of the slot, the connecting plate is inserted into the slot, the two ends of the through hole are respectively aligned with the corresponding mounting holes, and the through hole is connected through a bolt and a nut.

6. The sinter bed air permeation and perforation apparatus of claim 4 wherein, The bottom of the mounting seat is close to the upper end of the fixed plate, and the width of the connecting plate is greater than the width of the mounting seat.

7. The sinter bed air permeation and piercing device of claim 1 wherein, The distance between the tooth seats in the tooth seat array is 200-300 mm.

8. The sinter bed air permeation and perforation apparatus of claim 1 wherein, The number of rows of the tooth seat array is 8.

9. The sinter bed air permeation and piercing device of claim 1 wherein, The length of the circular roller is the same as the width of the trolley.

10. The sinter bed air permeation and piercing device of claim 1 wherein, The inserted layer of the bevel gear on the trolley is not greater than 200 mm.

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