A sintering machine material surface fuel distribution device

Abstract

The utility model discloses a kind of sintering machine material surface fuel distribution devices of weighing type, comprising: screw conveying unit, distribution unit and weighing unit;The device adopts double helix assembly, the helical direction of two groups of helical blades is opposite, can slow down the speed of coke powder transport, make coke powder distribution more uniform, and when coke powder material layer in the buffer groove away from the end of speed reducer is too high, reverse double helix assembly, avoid coke powder accumulation overflow, and adopt distribution unit, the coke powder that buffer groove enters volute is rotated and discharged, distribution to the mixed material surface on sintering machine platform car;Meanwhile, using weighing unit, sintering fuel distribution proportion is controlled between 5% and 10% of total amount, ensure that sintering fuel can be evenly laid in sintering surface layer material surface, realize the demand of fuel layering distribution on sintering process, effectively improve sinter ore production quality, reduce sinter solid fuel consumption and coal gas consumption.

Description

Technical Field

[0001] This utility model belongs to the field of fuel distribution technology for sintering machine material surface, specifically a weighing type fuel distribution device for sintering machine material surface. Background Technology

[0002] Currently, the fuel used for sintering in steel plants is mixed with iron-containing raw materials, flux, return ore, dust, etc., and granulated by a mixer and granulator. The mixture is then transported to the mixing silo, where it is evenly distributed onto the sintering machine trolley via mud rollers, wide belts, or multi-roller distributors. The fuel in the mixture on the surface of the sintering machine is ignited by an igniter. Under the action of the ventilation system, the entire sintering process is completed through a series of physical and chemical reactions, producing sinter that meets the requirements of blast furnaces.

[0003] Chinese patent CN115638657A discloses a fuel adaptive distribution sintering machine material distribution structure and sintering machine system, including a multi-roller material distribution device and a feeding device. This fuel adaptive distribution sintering machine material distribution structure achieves an ideal material distribution state where the particle size of the sintering material gradually increases from top to bottom after falling into the sintering machine trolley, which greatly improves the utilization rate of fuel and improves the permeability of the material layer, thereby increasing the yield and quality of sinter. However, after the fuel is distributed in this material distribution structure, the mixture is added, resulting in low strength of the sinter on the surface of the mixture and a high return rate. In addition, the fuel is evenly distributed at the bottom of the mixture, resulting in insufficient fuel sintering. The problem of insufficient sintering needs to be overcome by increasing the sintering time, which greatly increases solid fuel consumption and gas consumption.

[0004] Therefore, there is an urgent need for a weighing-type fuel distribution device for sintering machines, which can evenly distribute 5-10% of the sintering fuel on the surface of the sintering machine mixture, thereby achieving layered distribution of sintering fuel, making the heat distribution in the sintering process more uniform, improving the quality of sintered minerals, and reducing the consumption of sintering solid fuel and gas. Utility Model Content

[0005] The purpose of this utility model is to provide a weighing-type fuel distribution device for a sintering machine, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A weighing-type sintering machine fuel distribution device includes: Screw conveyor unit, fabric distribution unit, and weighing unit; The spiral conveying unit includes a double spiral assembly and a speed reducer, and the speed reducer is connected to the double spiral assembly via a coupling. The double-helix assembly includes two sets of helical blades, and the helical directions of the two sets of helical blades are opposite. The screw conveyor unit also includes a buffer trough, and a feed hopper is provided at the top of the buffer trough near the reducer. The bottom of the buffer tank is provided with a volute, the top of the volute is provided with a through groove, and the bottom is provided with a discharge groove at intervals. The fabric unit is provided inside the volute. The weighing unit is arranged across both sides of the buffer tank and connected to the sintering machine's material feeding platform, and is connected to the edge of the buffer tank through several weighing mechanisms.

[0007] The weighing-type fuel distribution device for sintering machines according to this utility model has at least the following technical effects: This weighing-type sintering machine fuel distribution device adds 5%-10% of the sintering fuel to the sintering surface through a screw conveyor unit, a distribution unit, and a weighing unit. The device employs a double-screw assembly with two sets of screw blades rotating in opposite directions, which slows down the coke powder transport speed, resulting in more uniform coke powder distribution. When the coke powder layer in the buffer trough away from the reducer becomes too high, the double-screw assembly reverses to prevent coke powder accumulation and overflow. The distribution unit rotates and discharges the coke powder entering the volute from the buffer trough, distributing it to the mixed material surface on the sintering machine trolley. Simultaneously, the weighing unit controls the sintering fuel distribution ratio to between 5% and 10% of the total, ensuring uniform distribution of the sintering fuel on the sintering surface. This fulfills the requirement for layered fuel distribution in the sintering process, effectively improving the quality of sintered ore and reducing solid fuel consumption and gas consumption.

[0008] As a further embodiment of this utility model: the fabric unit includes a fabric roller and a servo motor, and the servo motor is connected to the fabric roller through an output shaft.

[0009] As a further embodiment of this utility model, a number of discharge screws are evenly distributed along the length and circumference of the outer wall of the fabric roller.

[0010] The feeding unit includes a feeding roller and a servo motor, with the servo motor connected to the feeding roller via an output shaft. Several discharge screws are evenly distributed along the outer wall and circumference of the feeding roller. When feeding is required, coke powder is poured into the feed hopper, the reducer is started, and the double helix assembly pushes the coke powder in the buffer trough. As the double helix assembly rotates and pushes, the coke powder fills the volute. At this time, the servo motor is started, the feeding roller rotates, and the several discharge screws on the feeding roller rotate synchronously. Under the force of the rotation of the discharge screws, the coke powder is discharged from the discharge trough at the bottom of the volute and falls evenly on the sintering surface, thus achieving a uniform distribution of coke powder on the sintering surface.

[0011] As a further embodiment of this utility model, the spacing between several adjacent discharge screws along the length of the buffer groove is 8cm-12cm.

[0012] Since the spacing between several adjacent discharge screws along the length of the buffer trough is 8cm-12cm, the discharge screws are distributed along the length of the buffer trough at a spacing of 8cm-12cm, which can effectively cover the entire material distribution area. This ensures that the areas acted by adjacent discharge screws are connected to each other and have a certain degree of overlap, ensuring that there are no blank areas in the material distribution during the discharge process of coke powder. This ensures that the coke powder can be evenly distributed on the surface of the sintering material, which helps to improve the stability of the sinter quality.

[0013] As a further embodiment of this utility model, the distance between the discharge screw and the inner wall of the volute is 1mm-3mm.

[0014] Because the distance between the discharge screw and the inner wall of the volute is 1mm-3mm, it can prevent the discharge screw from interfering with the inner wall of the volute when rotating, avoid collisions or friction between the discharge screw and the inner wall of the volute, ensure the structural integrity and stability of the equipment, and reduce equipment failure and maintenance costs. At the same time, the coke powder can be smoothly discharged from the discharge chute to the sintering surface through this distance, avoiding the coke powder from being stuck or accumulating during the discharge process, ensuring that the coke powder can be discharged from the discharge chute evenly and continuously, and improving the uniformity and quality of the material distribution.

[0015] As a further improvement of this utility model, a bearing bush is provided in the middle of the fabric roller.

[0016] By setting a bearing bush in the middle of the fabric roller, effective support can be provided for the fabric roller, preventing it from shaking or deviating during rotation, avoiding contact between the discharge screw on the fabric roller and the inner wall of the volute, enabling the fabric roller to rotate stably along a predetermined trajectory and speed, ensuring a reasonable distance between the discharge screw and the inner wall of the volute, and guaranteeing the accuracy and stability of the discharge process.

[0017] As a further embodiment of this utility model: the weighing unit includes a first weighing frame and a second weighing frame, the first weighing frame and the second weighing frame being arranged at intervals along the length of the buffer groove.

[0018] As a further embodiment of this utility model: the weighing unit further includes a first spiral weighing scale, a second spiral weighing scale, and a third spiral weighing scale. The first spiral weighing scale is disposed between the first weighing frame and the buffer groove, and the second spiral weighing scale and the third spiral weighing scale are respectively disposed between the second weighing frame and the buffer groove.

[0019] The weighing unit includes a first weighing frame and a second weighing frame, which are spaced apart along the length of the buffer trough. The first and second weighing frames are respectively positioned across both sides of the buffer trough 3 and connected to the sintering machine's material feeding platform, ensuring that the spiral conveying unit is suspended in the air. The weighing unit also includes a first spiral weighing scale, a second spiral weighing scale, and a third spiral weighing scale. The first spiral weighing scale is positioned between the first weighing frame and the buffer trough, while the second and third spiral weighing scales are respectively positioned between the second weighing frame and the buffer trough. This allows the weighing unit to measure the weight of the material in the buffer trough from multiple points. The weight of the material at different locations may vary, and multi-point measurement can comprehensively reflect the true weight of the material in the entire buffer trough, avoiding measurement errors caused by uneven material distribution. This improves the accuracy of material measurement and ensures that the proportion of sintering fuel feeding is controlled between 5% and 10% of the total.

[0020] As a further embodiment of this utility model: a base plate is provided at both ends of the buffer groove, and a cover plate is provided in the middle of the base plate.

[0021] By setting base plates at both ends of the buffer tank and a cover plate in the middle of the base plate for bolt fixing of the reducer, the base plates at both ends of the buffer tank and the cover plate in the middle of the base plate provide a solid foundation support for the entire structure, enabling the reducer to remain stable during operation and preventing shaking or deviation, thereby ensuring the operational stability of the double helix assembly and guaranteeing the stable operation of the helical conveyor unit.

[0022] As a further embodiment of this utility model: a baffle plate is provided on the upper part of the cover plate of the bottom plate.

[0023] Because the bottom plate is located above the cover plate and is equipped with a baffle plate, it can prevent coke powder from overflowing when it accumulates too high at both ends of the buffer tank. This avoids material waste caused by coke powder overflow, which would prevent the coke powder from being fully utilized. It can also prevent coke powder from scattering everywhere, thus avoiding any impact on the working environment and the health of the operators. Attached Figure Description

[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the main structure of a weighing sintering machine material surface fuel distribution device; Figure 2 This is a top view schematic diagram of a fuel distribution device for a weighing sintering machine. Figure 3 A three-dimensional structural diagram of a fuel distribution device on the material surface of a weighing sintering machine; Figure 4 for Figure 2Enlarged view of a portion at point A; Figure 5 This is a right-side structural schematic diagram of a fuel distribution device for a weighing sintering machine.

[0026] Figure label: 1. Double helix assembly; 2. Reducer; 3. Buffer trough; 4. Feed hopper; 5. Volute housing; 6. Fabric roller; 7. Servo motor; 8. Discharge screw; 9. Bearing; 10. First weighing frame; 11. Second weighing frame; 12. First spiral weighing scale; 13. Second spiral weighing scale; 14. Third spiral weighing scale; 15. Base plate; 16. Cover plate; 17. Baffle plate. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] like Figure 1-3 The present invention, as shown in this embodiment, provides a weighing-type fuel distribution device for a sintering machine, comprising: a spiral conveying unit, a distribution unit, and a weighing unit; the spiral conveying unit includes a double spiral assembly 1 and a reducer 2, the reducer 2 being connected to the double spiral assembly 1 via a coupling; the double spiral assembly 1 includes two sets of spiral blades, the spiral directions of the two sets of spiral blades being opposite; the spiral conveying unit also includes a buffer trough 3, a feed hopper 4 being provided at the top of the buffer trough 3 near the reducer 2; a volute 5 being provided at the bottom of the buffer trough 3, a through groove being provided at the top of the volute 5, and a discharge groove being provided at intervals at the bottom, the distribution unit being disposed inside the volute 5; the weighing unit is arranged across both sides of the buffer trough 3 and connected to the sintering machine distribution platform, and is connected to the side of the buffer trough 3 via several weighing mechanisms.

[0034] Specifically, the weighing-type sintering machine fuel distribution device adds 5%-10% of the sintering fuel to the sintering surface through a screw conveying unit, a distribution unit, and a weighing unit. The device employs a double-screw assembly 1, with two sets of screw blades rotating in opposite directions. This slows down the transport speed of the coke powder, resulting in more uniform distribution. When the coke powder layer in the buffer trough 3, located away from the reducer 2, becomes too high, the double-screw assembly 1 is reversed to prevent coke powder accumulation and overflow. The distribution unit rotates and discharges the coke powder entering the volute 5 from the buffer trough 3, distributing it to the surface of the mixture on the sintering machine trolley. Simultaneously, the weighing unit controls the sintering fuel distribution ratio to between 5% and 10% of the total, ensuring uniform distribution of the sintering fuel on the sintering surface. This fulfills the requirement for layered fuel distribution in the sintering process, effectively improving the quality of sintered ore and reducing solid fuel consumption and gas consumption.

[0035] like Figure 2 and Figure 4As shown, the fabric unit includes a fabric roller 6 and a servo motor 7. The servo motor 7 is connected to the fabric roller 6 through an output shaft. Several discharge screws 8 are evenly distributed along the outer wall length and circumference of the fabric roller 6.

[0036] Specifically, the feeding unit includes a feeding roller 6 and a servo motor 7. The servo motor 7 is connected to the feeding roller 6 via an output shaft. Several discharge screws 8 are evenly distributed along the outer wall length and circumference of the feeding roller 6. When feeding is required, coke powder is poured into the feed hopper 4, the reducer 2 is started, and the double helix assembly 1 pushes the coke powder in the buffer trough 3. When the double helix assembly 1 rotates and pushes, the coke powder fills the volute 5. At this time, the servo motor 7 is started, the feeding roller 6 rotates, and drives the several discharge screws 8 on the feeding roller 6 to rotate synchronously. Under the push of the rotational force of the discharge screws 8, the coke powder is discharged from the discharge trough at the bottom of the volute 5 and evenly falls on the sintering surface material surface, thereby achieving a uniform distribution of coke powder on the sintering surface material surface.

[0037] Furthermore, the spacing between several adjacent discharge screws 8 along the length of the buffer groove 3 is 8cm-12cm.

[0038] Specifically, since the spacing between several adjacent discharge screws 8 along the length of the buffer trough 3 is 8cm-12cm, the discharge screws 8 are distributed along the length of the buffer trough 3 at a spacing of 8cm-12cm, which can effectively cover the entire material distribution area. This ensures that the areas acted by adjacent discharge screws 8 are connected to each other and have a certain overlap, ensuring that there are no blank areas in the material distribution during the discharge of coke powder. This ensures that the coke powder can be evenly distributed on the surface of the sintering material, which helps to improve the stability of the sinter quality.

[0039] Furthermore, the distance between the discharge screw 8 and the inner wall of the volute 5 is 1mm-3mm.

[0040] Specifically, since the distance between the discharge screw 8 and the inner wall of the volute 5 is 1mm-3mm, it can prevent the discharge screw 8 from interfering with the inner wall of the volute 5 when rotating, avoid collisions or friction between the discharge screw 8 and the inner wall of the volute 5, ensure the structural integrity and stability of the equipment, and reduce equipment failure and maintenance costs. At the same time, the coke powder can be smoothly discharged from the discharge chute to the sintering surface through this distance, avoiding the coke powder from being stuck or accumulating during the discharge process, ensuring that the coke powder can be discharged from the discharge chute evenly and continuously, and improving the uniformity and quality of the material distribution.

[0041] like Figure 1 and Figure 3 As shown, a bearing 9 is provided in the middle of the fabric roller 6.

[0042] Specifically, by setting a bearing 9 in the middle of the fabric roller 6, effective support can be provided for the fabric roller 6, preventing the fabric roller 6 from shaking or deviating during rotation, avoiding contact between the discharge screw 8 on the fabric roller 6 and the inner wall of the volute 5, so that the fabric roller 6 can rotate stably according to the predetermined trajectory and speed, ensuring a reasonable distance between the discharge screw 8 and the inner wall of the volute 5, and ensuring the accuracy and stability of the discharge process.

[0043] like Figure 2 and Figure 5 As shown, the weighing unit includes a first weighing frame 10 and a second weighing frame 11, which are spaced apart along the length of the buffer groove 3. The weighing unit also includes a first spiral weighing scale 12, a second spiral weighing scale 13 and a third spiral weighing scale 14. The first spiral weighing scale 12 is disposed between the first weighing frame 10 and the buffer groove 3, and the second spiral weighing scale 13 and the third spiral weighing scale 14 are respectively disposed between the second weighing frame 11 and the buffer groove 3.

[0044] Specifically, the weighing unit includes a first weighing frame 10 and a second weighing frame 11, which are spaced apart along the length of the buffer trough 3. The first weighing frame 10 and the second weighing frame 11 are respectively positioned across both sides of the buffer trough 3 and connected to the sintering machine's material distribution platform to ensure that the spiral conveying unit is suspended. The weighing unit also includes a first spiral weighing scale 12, a second spiral weighing scale 13, and a third spiral weighing scale 14. The first spiral weighing scale 12 is positioned between the first weighing frame 10 and the buffer trough 3, while the second spiral weighing scale 13 and the third spiral weighing scale 14 are respectively positioned between the second weighing frame 11 and the buffer trough 3. This allows the weighing unit to measure the weight of the material in the buffer trough 3 from multiple points. The weight of the material at different locations may vary, and multi-point measurement can comprehensively reflect the true weight of the material in the entire buffer trough 3, avoiding measurement errors caused by uneven material distribution, thereby improving the accuracy of material measurement and ensuring that the proportion of sintering fuel distribution is controlled between 5% and 10% of the total.

[0045] like Figure 3 As shown, the buffer groove 3 is provided with a base plate 15 at both ends, and a cover plate 16 is provided in the middle of the base plate 15.

[0046] Specifically, by setting base plates 15 at both ends of the buffer tank 3 and a cover plate 16 in the middle of the base plate 15 for bolt fixing of the reducer 2, the base plates 15 at both ends of the buffer tank 3 and the cover plate 16 in the middle of the base plate 15 provide a solid foundation support for the entire structure, so that the reducer 2 can remain stable during operation and prevent shaking or deviation, thereby ensuring the operational stability of the double helix assembly 1 and ensuring the stable operation of the helical conveying unit.

[0047] Furthermore, a baffle plate 17 is provided on the upper part of the cover plate 16 of the bottom plate 15.

[0048] Specifically, since the bottom plate 15 is located above the cover plate 16 and is equipped with a baffle plate 17, it can prevent the coke powder from overflowing when it accumulates too high at both ends of the buffer tank 3, thus avoiding material waste caused by the overflow of coke powder and preventing the coke powder from being fully utilized. It can also prevent the coke powder from scattering everywhere, thus avoiding the impact on the working environment and the health of the operators.

[0049] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A weighing-type sintering machine fuel distribution device, characterized in that, include: Screw conveyor unit, fabric distribution unit, and weighing unit; The spiral conveying unit includes a double spiral assembly and a speed reducer, and the speed reducer is connected to the double spiral assembly via a coupling. The double-helix assembly includes two sets of helical blades, and the helical directions of the two sets of helical blades are opposite. The screw conveyor unit also includes a buffer trough, and a feed hopper is provided at the top of the buffer trough near the reducer. The bottom of the buffer tank is provided with a volute, the top of the volute is provided with a through groove, and the bottom is provided with a discharge groove at intervals. The fabric unit is provided inside the volute. The weighing unit is arranged across both sides of the buffer tank and connected to the sintering machine's material feeding platform, and is connected to the edge of the buffer tank through several weighing mechanisms.

2. The weighing-type sintering machine fuel distribution device according to claim 1, characterized in that, The fabric unit includes a fabric roller and a servo motor, and the servo motor is connected to the fabric roller via an output shaft.

3. The weighing-type sintering machine fuel distribution device according to claim 2, characterized in that, Several discharge screws are evenly distributed along the length and circumference of the outer wall of the fabric roller.

4. The weighing-type sintering machine fuel distribution device according to claim 3, characterized in that, The spacing between several adjacent discharge screws along the length of the buffer groove is 8cm-12cm.

5. The weighing-type sintering machine fuel distribution device according to claim 4, characterized in that, The distance between the discharge screw and the inner wall of the volute is 1mm-3mm.

6. The weighing-type sintering machine fuel distribution device according to claim 5, characterized in that, A bearing bush is provided in the middle of the fabric roller.

7. The weighing-type sintering machine fuel distribution device according to claim 1, characterized in that, The weighing unit includes a first weighing frame and a second weighing frame, which are spaced apart along the length of the buffer groove.

8. The weighing-type sintering machine fuel distribution device according to claim 7, characterized in that, The weighing unit further includes a first spiral weighing scale, a second spiral weighing scale, and a third spiral weighing scale. The first spiral weighing scale is disposed between the first weighing frame and the buffer groove, and the second spiral weighing scale and the third spiral weighing scale are respectively disposed between the second weighing frame and the buffer groove.

9. The weighing-type sintering machine fuel distribution device according to any one of claims 1 to 8, characterized in that, The buffer groove is provided with a base plate at both ends, and a cover plate is provided in the middle of the base plate.

10. The weighing-type sintering machine fuel distribution device according to claim 9, characterized in that, The bottom plate is provided with a baffle plate on the upper part of the cover plate.

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