An ironmaking raw material conveying device

Abstract

The present invention relates to the technical field of conveying devices, and specifically discloses an iron-making raw material conveying device, which includes: a conveying table, a conveyor belt, a screening mechanism, and a quantitative packaging mechanism. Conveying rollers are provided on the conveying table. The end of the conveyor belt is located above the conveying table, and the conveyor belt is used to transfer materials onto the conveying table. A plurality of partitions are provided on the conveying table, and the plurality of partitions form a plurality of channels on the conveying table. The screening mechanism is used to separately feed materials of different sizes into different channels. The quantitative packaging mechanism includes a mounting base and a transfer assembly. The mounting base is provided on the conveying table, and the plurality of partitions extend to the mounting base, so that the plurality of channels extend to the mounting base. A transfer assembly is provided at the end of each channel. The iron-making raw material conveying device of the present invention first screens ore particles according to different particle sizes, then calculates the quantity of ores of different sizes required according to the volume of the container, and transfers the required quantity of ores into the container through the transfer assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying devices, and particularly relates to a conveying device for ironmaking raw materials. Background Art

[0002] Blast furnace ironmaking is a continuous and complex process, and the chemical reactions in the furnace need to be carried out under relatively stable conditions. Therefore, it is necessary to accurately control the addition amounts of iron ore, coke, and flux according to the quality requirements of the required pig iron. Since the dosages of coke and flux are easy to control, the key to controlling the burden ratio lies in controlling the addition amount of iron ore.

[0003] In the prior art, there are mainly the following common methods for quantitatively loading iron ore raw materials: using an electronic scale for weighing and loading, adopting a volumetric quantitative loading device, and using a belt scale for quantitative loading. An electronic scale is a high-precision weighing device, but this quantitative loading method is difficult to apply to large-scale ironmaking; volumetric quantitative loading is based on the principle that the weight of ore with a certain volume is relatively fixed, and quantitative loading is achieved by controlling the volume of the ore; a belt scale is a weighing device installed on a belt conveyor, which mainly consists of a scale frame, a weighing sensor, a speed measuring sensor, an instrument, etc. The cost of the quantitative weighing equipment using this method is relatively high. Therefore, in the related art, a volumetric quantitative loading device is usually used to quantitatively divide and pack iron ore.

[0004] Chinese Patent with the authorization announcement number CN215974048U discloses a high-precision quantitative feeder, which includes a base, a hanging part structure, and a feed hopper. The base is installed at the bottom of the machine body. Two groups of rear fixing plates are arranged on the rear side of the base, and two groups of front fixing plates are arranged on the front side of the base. Connecting plates are installed on the outer sides of the rear fixing plates and the front fixing plates through a plurality of fastening bolts, and the hanging part structure is installed at the upper end of the connecting plate; the feed hopper is installed at the upper rear side of the machine body. An upper fixing plate is arranged at the bottom of the feed hopper, and fixing frames are arranged on both the front and rear sides of the lower end face of the upper fixing plate.

[0005] The above patent indirectly changes the exciting force of the vibration motor by controlling the frequency converter, thereby conveniently and accurately regulating the size of the feeding amount of the equipment and ensuring the uniform and stable material flow rate.

[0006] Since the sizes of the newly mined iron ore are not equal, even if the above patent can ensure the uniform and stable material flow rate, when the container is about to be filled with iron ore, there will be a situation where the remaining volume is difficult to hold large particles of ore, resulting in overfilling or underfilling of the container. Summary of the Invention

[0007] The present invention provides a conveying device for ironmaking raw materials, aiming to solve the problems of overfilling or underfilling of the container in the related art.

[0008] The iron-making raw material conveying device of the present invention includes: a conveying table, a conveyor belt, a screening mechanism, and a quantitative packaging mechanism;

[0009] Conveyor rollers are provided on the conveying table;

[0010] The end of the conveyor belt is located above the conveying table, and the conveyor belt is used to transfer materials onto the conveying table;

[0011] A plurality of partition plates are provided on the conveying table, and the plurality of partition plates form a plurality of channels on the conveying table. The screening mechanism is used to separately feed materials of different sizes into different channels;

[0012] The quantitative packaging mechanism includes a mounting base and a transfer assembly. The mounting base is provided on the conveying table, and the plurality of partition plates extend to the mounting base, so that the plurality of channels extend to the mounting base. A transfer assembly is provided at the end of each channel, and the transfer assembly can quantitatively transport ore particles.

[0013] Beneficial effects: The screening mechanism separates ore particles of different particle sizes and separately feeds them into different channels. The transfer assembly is used to transfer the ore particles in different channels into a container. When the container is about to be filled, calculate the remaining space in the container, and transfer different numbers of ore particles of different particle sizes into the container as needed according to the remaining space in the container, so that the container is just filled.

[0014] Preferably, the screening mechanism includes a plurality of sieve plates. The conveyor belt is inclinedly distributed, and the plurality of sieve plates are all inclinedly distributed on the conveyor belt, and the inclination directions between adjacent two sieve plates are opposite.

[0015] Preferably, a plurality of converging plates are further provided on the conveying table. The converging plates are folding plates, and the plurality of converging plates are spaced apart. A converging space is formed between adjacent converging plates, and each converging space corresponds to one channel.

[0016] The effect is that the ore particles of different particle sizes after screening fall into different converging spaces, are gathered by the converging spaces and move into the corresponding channels, preventing the ore particles from entering the wrong channels and resulting in inaccurate quantification.

[0017] Preferably, the transfer assembly includes a first driving member, a driving shaft, a rotating sleeve, and blades. The driving shaft is rotationally fitted on the conveying table. The first driving member is provided in the conveying table and is used to drive the driving shaft to rotate. The rotating sleeve is fixedly connected to the driving shaft, and the plurality of blades are circumferentially spaced apart along the rotating sleeve. An accommodating groove is formed between adjacent blades, and each accommodating groove can accommodate one ore particle.

[0018] The effect is that the drive shaft drives the blades to rotate through the rotating sleeve, enabling the blades to drive the ore particles in the accommodating groove to move. When the drive shaft stops rotating, the blades can also block the ore particles to prevent excessive ore particles from entering the container.

[0019] Preferably, a partition plate is provided in each of the channels. The partition plate divides the channel into a first branch and a second branch. The transfer assembly is located in the first branch, and a baffle is slidably fitted on the second branch. The baffle can close the second branch.

[0020] The effect is that when the volume of the container is large, the ore particles in each channel can be directly transferred into the container through the corresponding second branch. When the container is about to be filled, the second branch is closed by the baffle, thereby improving the conveying efficiency.

[0021] Preferably, a discharge hopper is provided at the end of the channel. The discharge hopper is in a funnel-shaped structure. Each discharge hopper corresponds to one channel, and the discharge hopper is flush with the end of the corresponding channel.

[0022] The effect is that the discharge hopper can prevent the ore particles from splashing when falling from each channel to the container, resulting in the ore particles not entering the container and affecting the quantitative packaging.

[0023] Preferably, a loading platform is further provided at the bottom of the mounting seat. The loading platform is located below the discharge hopper.

[0024] Preferably, a pressure sensor is provided on the loading platform.

[0025] By adopting the above technical solutions, the beneficial effects of the present invention are as follows:

[0026] According to the iron-making raw material conveying device of the present invention, ore particles of different particle sizes are separated by a screening mechanism and enter different channels respectively. The transfer assembly is used to transfer the ore particles in different channels into the container. When the container is about to be filled, the remaining space in the container is calculated, and different numbers of ore particles of different particle sizes required are transferred into the container according to the remaining space of the container, so that the container is just filled, thereby realizing precise quantitative packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of the iron-making raw material conveying device according to an embodiment of the present invention.

[0028] Figure 2 is a schematic structural diagram of the conveyor belt and the screening mechanism according to an embodiment of the present invention.

[0029] Figure 3 is Figure 2 an enlarged view of part A in

[0030] Figure 4 It is a schematic structural diagram of the quantitative packaging mechanism according to an embodiment of the present invention.

[0031] Figure 5 It is a schematic structural diagram of the mounting base according to an embodiment of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the transfer assembly according to an embodiment of the present invention.

[0033] Figure 7 It is a schematic structural diagram of the baffle according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] 1, conveying table; 2, conveying roller; 3, conveyor belt; 4, screening mechanism; 41, first sieve plate; 42, second sieve plate; 43, third sieve plate; 44, fourth sieve plate; 45, first limiting plate; 46, second limiting plate; 5, partition plate; 6, gathering plate; 71, mounting base; 711, arc-shaped groove; 72, transfer assembly; 721, drive shaft; 722, rotating sleeve; 723, blade; 724, first driving member; 725, first gear; 8, dividing plate; 9, baffle; 91, turntable; 92, arc-shaped plate; 93, second driving member; 94, second gear; 10, discharge hopper; 11, loading table; 12, pressure sensor;

[0036] 101, first channel; 102, second channel; 103, third channel; 104, fourth channel. Detailed implementation manners

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0038] As Figures 1 to 7 shown, the iron ore raw material conveying device of the present invention includes: a conveying table 1, a conveyor belt 3, a screening mechanism 4 and a quantitative packaging mechanism.

[0039] Specifically, as Figure 1 shown, conveying rollers 2 are provided on the conveying table 1, and a driving motor is provided inside the conveying table 1. The driving motor is used to drive the conveying rollers 2 to rotate, and the conveying rollers 2 are used to transport the ore particles on the conveying table 1.

[0040] As Figures 1 to 3As shown in the figure, the conveyor belt 3 is inclined, with the rear end of the conveyor belt 3 higher than its front end. The rear end of the conveyor belt 3 is located above the front end of the conveying table 1. The screening mechanism 4 is arranged on the conveyor belt 3. The screening mechanism 4 includes a first sieve plate 41, a second sieve plate 42, a third sieve plate 43, and a fourth sieve plate 44. The first sieve plate 41, the second sieve plate 42, the third sieve plate 43, and the fourth sieve plate 44 are successively inclined on the conveyor belt 3, and the inclination directions between adjacent sieve plates are opposite. A first limiting plate 45 is arranged in the middle section of the third sieve plate 43, and a second limiting plate 46 is arranged in the middle section of the fourth sieve plate 44. Sieve holes of different sizes are respectively arranged on the first sieve plate 41, the second sieve plate 42, the third sieve plate 43, and the fourth sieve plate 44. Among them, the sieve holes on the first sieve plate 41 are the largest, and the sieve holes on the fourth sieve plate 44 are the smallest. Ore particles are poured onto the rear end of the conveyor belt 3 and roll down along the inclined conveyor belt 3. The ore particles first abut against the first sieve plate 41. The largest ore particles remain on the first sieve plate 41 and move along the first sieve plate 41 to the lowest point of the first sieve plate 41. The remaining ore passes through the first sieve plate 41 and moves onto the second sieve plate 42. The larger ore particles remain on the second sieve plate 42 and move along the second sieve plate 42 to the lowest point of the second sieve plate 42. The remaining ore passes through the second sieve plate 42 and moves onto the third sieve plate 43. The smaller ore particles remain on the third sieve plate 43 and move along the third sieve plate 43 to the first limiting plate 45. The remaining ore passes through the third sieve plate 43 and moves onto the fourth sieve plate 44. The smallest ore particles remain on the fourth sieve plate 44 and move along the fourth sieve plate 44 to the second limiting plate 46. The remaining fine impurities such as sand and soil roll down along the conveyor belt 3 until they fall from the front end of the conveyor belt 3.

[0041] As Figure 1 shown in the figure, a plurality of partition plates 5 are arranged on the conveying table 1. A first channel 101, a second channel 102, a third channel 103, and a fourth channel 104 are respectively formed between the plurality of partition plates 5. A plurality of converging plates 6 are further arranged at the front end of the conveying table 1. The converging plates 6 are folding plates. A converging space is formed between adjacent converging plates 6. The converging space is funnel-shaped, with the width of its front end greater than that of its rear end. There are four converging spaces, which respectively correspond to the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104. The conveyor belt 3 can drive the screening mechanism 4 to move, so that the first sieve plate 41, the second sieve plate 42, the third sieve plate 43, and the fourth sieve plate 44 respectively push large ore particles, larger ore particles, smaller ore particles, and the smallest ore particles from the front end of the conveyor belt 3 to the rear end of the conveyor belt 3. After the ore crosses the rear end of the conveyor belt 3, it will fall on the conveying table 1 and enter the corresponding converging space. Ore particles of different sizes enter the corresponding channels from the converging space driven by the conveying rollers 2. Among them, large ore particles enter the first channel 101, larger ore particles enter the second channel 102, smaller ore particles enter the third channel 103, and the smallest ore particles enter the fourth channel 104.

[0042] As Figure 1 , Figures 4 to 7 shown, the quantitative filling mechanism includes a mounting base 71 and a transfer assembly 72. The mounting base 71 is fixedly connected to the side wall of the conveying table 1. The top surface of the mounting base 71 is an inclined surface structure, with the end close to the conveying table 1 being higher than the end far from the conveying table 1, and the vertex of the mounting base 71 being flush with the conveying table 1. A plurality of partition plates 5 extend to the top surface of the mounting base 71, such that the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104 extend to the mounting base 71. Partition plates 8 are provided at the ends of the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104. The partition plates 8 divide the corresponding channels into a first branch and a second branch.

[0043] An arc-shaped groove 711 is provided at the end of the first branch. A transfer assembly 72 is provided in the arc-shaped groove 711. The transfer assembly 72 includes a first driving member 724, a driving shaft 721, a rotating sleeve 722, and blades 723. The driving shaft 721 is rotatably fitted on the mounting base 71. The first driving member 724 is fixedly connected inside the mounting base 71. The first driving member 724 is a motor. The driving shaft 721 passes through the mounting base 71 and extends into the mounting base 71. A first gear 725 is provided at the output end of the first driving member 724. The first gear 725 meshes with the driving shaft 721. The first driving member 724 drives the driving shaft 721 to rotate through the first gear 725. The rotating sleeve 722 is fixedly connected to the driving shaft 721. A plurality of blades 723 are fixedly connected to the side wall of the rotating sleeve 722, and the plurality of blades 723 are evenly spaced circumferentially along the rotating sleeve 722. A receiving groove is formed between adjacent blades 723. Each receiving groove can accommodate one piece of ore. When the first driving member 724 drives the driving shaft 721 to rotate, the rotating sleeve 722 rotates synchronously with the driving shaft 721 and drives the blades 723 to rotate. The rotation of the blades 723 can push the ore in the receiving groove to rotate, thereby realizing the sequential transfer of the ore in the first branch one by one into the discharge hopper 10.

[0044] A baffle 9 is provided at the end of the second branch. The baffle 9 includes a turntable 91 and an arc-shaped plate 92. The turntable 91 is rotationally fitted in the mounting seat 71. A plurality of grooves are provided on the side wall of the turntable 91 and are evenly spaced along its circumferential direction. The arc-shaped plate 92 is fixedly connected to the turntable 91. The arc-shaped plate 92 is slidably fitted with the mounting seat 71. The arc-shaped plate 92 can slide relative to the mounting seat 71 along its circumferential direction. The arc-shaped plate 92 can extend out of or retract into the mounting seat 71. The baffle 9 is slidably fitted in the mounting seat 71. A second driving member 93 is provided in the mounting seat 71. The second driving member 93 is a motor. A second gear 94 is provided at the output end of the second driving member 93. The second gear 94 meshes with the turntable 91. The second driving member 93 drives the turntable 91 to rotate through the second gear 94, so as to move the arc-shaped plate 92 relative to the mounting seat 71, thereby controlling the arc-shaped plate 92 to extend out of or retract into the mounting seat 71, and realizing the opening and closing control of the second branch.

[0045] As Figure 4 and Figure 5 shown, discharge hoppers 10 are provided at the ends of the first channel 101, the second channel 102, the third channel 103 and the fourth channel 104. The discharge hopper 10 is a funnel-shaped structure, and the side wall of the discharge hopper 10 is flush with the corresponding first channel 101 or second channel 102 or third channel 103 or fourth channel 104.

[0046] As Figure 4 shown, a loading platform 11 is provided at the bottom of the mounting seat 71. The loading platform 11 is located below the discharge hopper 10. A container can be placed on the loading platform 11. The container is used to load ores. A pressure sensor 12 is also provided on the loading platform 11. The pressure sensor 12 can measure the weight of the container, and thus the mass of the material in the container can be calculated.

[0047] According to the iron-making raw material conveying device of the embodiment of the present invention, ore particles are poured at the rear end of the conveyor belt 3 and roll downward along the inclined conveyor belt 3. The ore particles first abut against the first sieve plate 41. Among them, the largest-particle ore remains on the first sieve plate 41 and moves along the first sieve plate 41 to the lowest point of the first sieve plate 41. The remaining ore passes through the first sieve plate 41 and moves onto the second sieve plate 42. The larger-particle ore remains on the second sieve plate 42 and moves along the second sieve plate 42 to the lowest point of the second sieve plate 42. The remaining ore passes through the second sieve plate 42 and moves onto the third sieve plate 43. The smaller-particle ore remains on the third sieve plate 43 and moves along the third sieve plate 43 to the first limiting plate 45. The remaining ore passes through the third sieve plate 43 and moves onto the fourth sieve plate 44. The smallest-particle ore remains on the fourth sieve plate 44 and moves along the fourth sieve plate 44 to the second limiting plate 46. The remaining fine impurities such as sand and soil roll along the conveyor belt 3 until they fall from the front end of the conveyor belt 3. The conveying roller 2 drives the ore on the conveying table 1 to move from front to back. The largest-particle ore, the larger-particle ore, the smaller-particle ore, and the smallest-particle ore respectively enter different gathering spaces. After gathering, they respectively enter the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104. When the ore moves to the end of the corresponding channel, a part of the ore enters the second branch and slides along the second branch to the discharge hopper 10, and falls into the container on the loading table 11 from the discharge hopper 10 under the action of gravity. When the container is about to be filled, the remaining space size of the container is calculated based on the data measured by the pressure sensor 12, and the quantity of ore of each size required to exactly fill the remaining space is calculated. The second driving member 93 drives the baffle 9 to extend out of the mounting seat 71, and the four baffles 9 respectively close the second branches in the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104. Subsequently, the four first driving members 724 drive the corresponding drive shafts 721 to rotate, so that the transfer assemblies 72 in the first branches of the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104 accurately transfer the largest-particle ore, the larger-particle ore, the smaller-particle ore, and the smallest-particle ore to the discharge hopper 10 according to the calculated quantity until the container is just filled.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An ironmaking raw material conveying device, comprising: A conveying platform, wherein a conveying roller is provided on the conveying platform; A conveyor belt, the end of which is located above the conveyor platform, and the conveyor belt is used to transfer materials to the conveyor platform; It is characterized in that it also includes a screening mechanism, a plurality of partitions are provided on the conveying platform, and the plurality of partitions form a plurality of channels on the conveying platform, and the screening mechanism is used to send materials into different channels according to their sizes; A quantitative packing mechanism, the quantitative packing mechanism comprising a mounting seat and a transfer assembly, the mounting seat is arranged on the conveying platform, a plurality of the partitions extend to the mounting seat, so that a plurality of the channels extend to the mounting seat, and the transfer assembly is arranged at the end of each channel, and the transfer assembly can transport ore particles quantitatively; The screening mechanism comprises a plurality of screen plates, the conveyor belt is obliquely distributed, the plurality of screen plates are obliquely distributed on the conveyor belt, and the inclination directions of two adjacent screen plates are opposite; The transfer assembly includes a first driving member, a driving shaft, a rotating sleeve and blades. The driving shaft is rotatably matched on the conveying platform. The first driving member is arranged in the conveying platform and is used to drive the driving shaft to rotate. The rotating sleeve is fixedly connected to the driving shaft. A plurality of blades are distributed at intervals along the circumference of the rotating sleeve. Accommodation grooves are formed between adjacent blades, and each accommodation groove can accommodate one ore particle. A partition plate is provided in each channel, which divides the channel into a first branch and a second branch. The transfer component is located in the first branch, and a baffle plate is slidably fitted on the second branch, which can close the second branch.

2. The ironmaking raw material conveying device according to claim 1, characterized in that: The conveying platform is also provided with a plurality of folding plates, which are folding line plates. The plurality of folding plates are distributed at intervals, and folding spaces are formed between adjacent folding plates. Each folding space corresponds to one of the channels.

3. The ironmaking raw material conveying device according to claim 1, characterized in that: A discharge hopper is provided at the end of the channel. The discharge hopper is a funnel-shaped structure. Each of the discharge hoppers corresponds to one of the channels, and the discharge hopper is flush with the corresponding end of the channel.

4. The ironmaking raw material conveying device according to claim 3, characterized in that: A loading platform is also provided at the bottom of the mounting seat, and the loading platform is located below the discharge hopper.

5. The ironmaking raw material conveying device according to claim 4, characterized in that: A pressure sensor is arranged on the loading platform.

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