A loose material discharging device of a gas-based shaft furnace

Abstract

The utility model belongs to the vertical furnace's material loosening and discharging technical field, the utility model discloses a kind of material loosening and discharging device of gas-based shaft furnace, material loosening mechanism is provided with three, is respectively fixedly installed on three groups of axle seat;Swing assembly is provided with three, is respectively fixedly installed on the front side end surface of material loosening mechanism, the left end of connecting square bar is fixedly connected with the bottom of left swing assembly, the right end of connecting square bar is fixedly connected with the bottom of right swing assembly, the middle position of connecting square bar and the swing assembly of middle position are fixedly hinged by pin shaft and approach bottom position;The left end of cylinder one cylinder body and the cylinder seat of H steel left end are fixedly hinged, the right end of cylinder two cylinder body and the cylinder seat of H steel right end are fixedly hinged.The utility model has beneficial effects: 1, the maintenance dismounting of square material loosening blade is convenient, save time and labour.2, the residual cold liquid impurity in axle cylinder can be discharged, simultaneously utilize cold liquid high latent heat value, to improve the cooling effect to sleeve and axle cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of loosening and discharging technology of vertical shaft furnaces, and specifically relates to a loosening and discharging device for a gas-based vertical shaft furnace. Background Technology

[0002] Gas-based vertical shaft furnaces are a type of ironmaking process that uses natural gas or coke oven gas as reducing gas to directly reduce iron ore within a vertical shaft furnace. They offer advantages such as high efficiency, environmental friendliness, and continuous production. The furnace employs a convective moving bed design, where the charge moves downwards and the reducing gas flows upwards, achieving counter-current heat exchange and reaction. The gas-based vertical shaft furnace direct reduction method has significant advantages, primarily in high single-unit output, no coking coal consumption, energy saving and environmental protection, low energy consumption, and low CO2 emissions. Gas-based vertical shaft furnaces are the mainstream of direct reduction coke-free ironmaking technology and a low-carbon, green, advanced ironmaking technology producing high-quality products. Therefore, gas-based vertical shaft furnaces have become the main development direction for direct reduction ironmaking technology in my country. The structure of a gas-based vertical shaft furnace can be divided into a drying zone, a preheating zone, a roasting zone, a soaking zone, and a cooling zone according to the roasting process. When the material enters the furnace from the top opening, it first undergoes drying and preheating. When the material falls into the preheating zone and the roasting zone, the temperature reaches 850℃~900℃. At this time, the material is in a semi-molten state and is most prone to caking. If the material is not loosened by forced intervention at this time, it will cause blockage in the gas-based vertical shaft furnace, affecting the smooth progress of the roasting process.

[0003] In the prior art, a commonly used material loosening mechanism for gas-based vertical shaft furnaces is patent application number 202311075137.9, entitled "A Material Loosening Device for a Gas-Based Reduction Vertical Shaft Furnace." This patent discloses that "the material loosener includes a hollow rotating shaft and material loosening claws fixed to the outer wall of the rotating shaft. Two sleeves are fixedly installed on the side wall of the reduction vertical furnace, with the two sleeves coaxially spaced apart. One end of the rotating shaft passes through the two sleeves sequentially to achieve a rotatable connection on the reduction vertical furnace. In this embodiment, seven pairs of sleeves are specifically provided. To improve the airtightness at the contact point between the sleeves and the rotating shaft..." An annular sealing gland is fixed to the inner wall of the sleeve. Several loosening claws are evenly spaced, and the loosening claws on adjacent shafts are staggered. In other embodiments of this example, the loosening claws can be detachably connected to the outer wall of the shaft using bolts. Coolant is provided inside the shaft to cool the loosener, reducing the possibility of damage to the loosener under high-temperature conditions. In this embodiment, the length of the shaft is varied. In other embodiments of this example, cooling gas can be introduced into the shaft for cooling, and the cooling gas is... After one end of the shaft is inserted into the shaft, cooling gas is discharged from the other end of the shaft. The cooling gas cools the shaft and then heats up to become high-temperature gas. The operator can recover and reuse the obtained high-temperature gas to achieve efficient heat utilization. An installation platform (not shown in the figure) is set on one side of the reduction furnace. A drive assembly is connected to the installation platform. The drive assembly includes a first drive source and a reducer. Both the gear and the reducer are fixed to the installation platform. Gears are coaxially fixed to one end of the shafts of the upper and middle loosening device groups, and two adjacent gears in the same loosening device group mesh with each other. An output shaft is set on one side of the reducer and an input shaft is set on the other side. The output shaft of the reducer is coaxially fixedly connected to the middle shaft in the loosening device group. In this embodiment, the first drive source is specifically set as a motor. The drive shaft of the first drive source is connected to the input shaft of the reducer through a coupling. In this embodiment, there are three reducers and three first drive sources. The reducers are set one-to-one with each loosening device group, and the first drive sources are also set one-to-one with each loosening device group. The main technical problems with the material loosening device disclosed in the aforementioned patent documents are as follows: 1. The feeder shaft is driven by a drive assembly to rotate multiple shafts. Under the rotation of the shaft, the loosening claws and cams rotate synchronously, thereby realizing the rotational loosening operation of materials in the gas-based vertical shaft furnace. The loosening claws set on the shaft are integral structures formed by sand casting. When the loosening claws on the shaft are worn or damaged, replacing them is troublesome, labor-intensive, and time-consuming. 2. Coolant (or cooling gas) is installed inside the shaft to cool the material loosening device and reduce the possibility of damage to the material loosening device in a high-temperature environment. When coolant is introduced into the shaft, the coolant is in a high-temperature environment for a long time, and the residue in the coolant is prone to sticking to the inner wall of the shaft, causing blockage inside the shaft. When cooling gas is introduced into the shaft, the cooling effect of the shaft is reduced due to the low latent heat value of the cooling gas.Based on the aforementioned deficiencies in the prior art, the inventors developed a loose material discharge device for a gas-based vertical shaft furnace, which can effectively solve the aforementioned technical problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned technical problems, this invention provides a loosening and discharging device for a gas-based vertical shaft furnace. The design of this invention is simple, scientific, and reasonable. This invention solves the problems of cumbersome and time-consuming replacement of the loosening claws in existing technologies. It also solves the problem that, due to prolonged exposure to high temperatures, residues in the coolant easily adhere to the inner wall of the rotating shaft, causing blockage. Furthermore, it addresses the issue of reduced cooling effect of the rotating shaft due to the low latent heat value of the gas cooling medium.

[0005] The technical solution adopted in this utility model is as follows: a material loosening and discharging device for a gas-based vertical shaft furnace, comprising a conical box, a fixed plate, and a connecting cylinder. The conical box is a cone shape with an inner opening, and the inner surface of the conical box is an arc surface. The conical box is symmetrically fixedly arranged on the front and rear sides of the bottom of the fixed plate. A through hole is opened in the center of the fixed plate. The connecting cylinder is fixedly arranged on the upper part of the fixed plate. The connecting cylinder is a hollow ring shape, and the diameter of the through hole in the center of the fixed plate is equal to the inner diameter of the connecting cylinder. Three sets of bearing seats are provided, with two symmetrically arranged in front and rear as one set. The three sets of bearing seats are equidistantly fixedly arranged at the front and rear edges of the fixed plate. Three material loosening mechanisms are provided, respectively fixedly installed on the three sets of bearing seats. The material loosening mechanisms are used to intermittently rotate the material in the gas-based vertical shaft furnace, thereby realizing the material loosening and discharging. The material is loosened and discharged; three swing components are provided, which are fixedly installed on the front end face of the loosening mechanism. The left end of the connecting square rod is fixedly connected to the bottom of the left swing component, and the right end of the connecting square rod is fixedly connected to the bottom of the right swing component. The middle position of the connecting square rod is fixedly hinged to the bottom position of the middle swing component by a pin. The left and right ends of the H-beam are fixedly installed on the reinforcing ribs of the outer wall of the gas-based vertical furnace. The cylinder seats are symmetrically fixedly installed at the upper two ends of the H-beam. The left end of the cylinder body of cylinder one is fixedly hinged to the cylinder seat at the left end of the H-beam, and the right end of the cylinder body of cylinder two is fixedly hinged to the cylinder seat at the right end of the H-beam. The right end of the telescopic rod of cylinder one is fixedly hinged to the bottom of the middle swing component, and the left end of the telescopic rod of cylinder two is fixedly hinged to the bottom of the middle swing component.

[0006] The central through hole of the fixed plate is concentric with the connecting cylinder, the wall thickness of the connecting cylinder is equal to the thickness of the gas-based vertical furnace, and the inner diameter of the connecting cylinder is smaller than the inner diameter of the gas-based vertical furnace.

[0007] The loosening mechanism includes a sleeve fixed in the middle of a shaft cylinder, which is hollow with both ends closed. The sleeve and shaft cylinder radially pass through the connecting cylinder body. The front and rear ends of the shaft cylinder are fixedly mounted on a set of symmetrically arranged shaft seats. A cold liquid conveying pipe is fixedly mounted on the right side of the rear end of the shaft cylinder, and a cold liquid output pipe is fixedly mounted on the left side of the rear end of the shaft cylinder. The cold liquid conveying pipe and the cold liquid output pipe are arranged horizontally side by side. Loosening plates are arranged longitudinally in groups at equal intervals on the upper surface of the sleeve. Two to four groups of loosening plates are horizontally and evenly fixed around the upper surface of the sleeve. Fixed ears are symmetrically arranged in the longitudinal intervals of the loosening plates. The feeding blade is semi-circular and is installed in the middle of the symmetrically arranged fixed ears. It is fixed by a fixed shaft passing through the feeding blade and the fixed ears. A protruding post is fixedly mounted at the center of the arc-shaped surface at the top of the feeding blade.

[0008] The diameter of the cold liquid delivery pipe is smaller than that of the cold liquid output pipe; the cold liquid delivery pipe is fixedly connected to the output end of the cold liquid pump inside the cold liquid circulation system, and the cold liquid output pipe is fixedly connected to the input end of the cold liquid circulation system.

[0009] A gap is reserved at the junction of the sleeve and the outer arc surface of the connecting cylinder, and the gap at the junction of the sleeve and the outer arc surface of the connecting cylinder is filled with a high-temperature resistant sealing material.

[0010] The swing assembly includes a V-shaped plate, which is V-shaped with arcs at the top and bottom. The V-shaped plate is symmetrically arranged front and back. Fixing hole one is opened at the upper position of the V-shaped plate, and fixing hole two is fixedly arranged at the lower position of the V-shaped plate. Fixing hole one and fixing hole two are through holes passing through the body of the V-shaped plate. The connecting shaft is fixedly installed in fixing hole two at the lower part of the symmetrically arranged V-shaped plate and connects the symmetrically arranged V-shaped plates into one piece. The diameter of fixing hole one is equal to the diameter of the shaft cylinder, and fixing hole one is fixedly installed at the front end of the shaft cylinder.

[0011] The connecting rod has mounting holes at both ends. The left mounting hole of the connecting rod is hinged to the bottom connecting shaft of the V-shaped plate of the left swing assembly. The right mounting hole of the connecting rod is hinged to the bottom connecting shaft of the V-shaped plate of the right swing assembly. The middle of the connecting rod passes through the middle of the middle swing assembly and is fixedly hinged to the V-shaped plates arranged symmetrically at the front and back by a pin.

[0012] The right end of the telescopic rod of cylinder one is fixedly hinged to the bottom connecting shaft of the V-shaped plate of the swing assembly in the middle position, and the left end of the telescopic rod of cylinder two is fixedly hinged to the bottom connecting shaft of the V-shaped plate of the swing assembly in the middle position.

[0013] Cylinder 1 and Cylinder 2 are fixedly connected to the air source solenoid valve via high-pressure air pipes. The air source solenoid valve is used to supply high-pressure air to Cylinder 1 and Cylinder 2 respectively. Magnetic switches (not shown in the figure) are provided on the front side of Cylinder 1 and Cylinder 2. The air source solenoid reversing valve is connected to the PLC control module via signal lines.

[0014] The working process of the loosening and discharging device of this gas-based vertical shaft furnace is as follows: First, the PLC control module sends an opening control command to cylinder one. At this time, the telescopic rod of cylinder one begins to extend to the right. Simultaneously, the PLC control module sends a synchronous retraction control command to cylinder two. The telescopic rod of cylinder two retracts. Through the hinge action of the connecting shaft at the bottom of the V-shaped plate of the swing assembly in the middle position between the inner ends of the telescopic rods of cylinder one and cylinder two, the extension action of the telescopic rod of cylinder one and the retraction action of the telescopic rod of cylinder two jointly drive the swing assembly in the middle position to swing to the right, and at the same time drive the connecting square rod to swing to the right. Driven by the rightward swing of the connecting rod, the left and right ends of the connecting rod are hinged to the connecting shaft at the bottom of the V-shaped plate of the left swing assembly and the connecting shaft at the bottom of the V-shaped plate of the right swing assembly, causing the left and right swing assemblies to swing to the right. At this time, the left, middle, and right swing assemblies swing to the right simultaneously, causing the cylinders of the three loosening mechanisms on the three sets of bearings to rotate 90° to the left around the bearings. Driven by the rotation of the cylinders and sleeves of the three loosening mechanisms to the left, the loosening plate, loosening blade, and protrusion on the sleeve rotate 90° to the left.

[0015] When cylinder one completes its extension stroke and cylinder two completes its retraction stroke, the magnetic switches of cylinder one and cylinder two send position signals to the PLC control module. Upon receiving these signals, the PLC control module sends a retraction control command to cylinder one and an extension control command to cylinder two. Cylinder one retracts its extension rod, and cylinder two begins its extension stroke. Simultaneously, the swing assembly and connecting rod repeat the opposite swing motion, enabling the three unloading mechanism cylinders on the three sets of bearings to rotate 90° to the right around the bearing. Driven by this 90° rotation of the three unloading mechanism cylinders and sleeves to the right… The loosening plate, loosening blades, and protrusions on the sleeve rotate 90° to the right. Under the linkage of the PLC control module, the air source solenoid reversing valve, cylinder one, cylinder two, shaft seat, and loosening mechanism, the shafts of the three loosening mechanisms on the three sets of shaft seats rotate intermittently 90° to the left or right around the shaft seat. This causes the loosening plate, loosening blades, and protrusions on the sleeve to rotate intermittently 90° to the left or right, loosening the semi-molten material (caking material) in the preheating zone and roasting zone. Finally, the smelting material that has been forcibly loosened falls into the homogenizing zone of the gas-based vertical furnace through the gaps between the loosening mechanisms, where it undergoes further oxidation-reduction reaction to achieve iron smelting.

[0016] The beneficial effects of this utility model are as follows: 1. By setting the fixing ear and fixing shaft, the loosening blade and the protrusion can be fixed on the fixing ear, thereby facilitating the maintenance and disassembly of the loosening blade, saving time and labor. 2. By setting the cold liquid delivery pipe and the cold liquid output pipe, under the same cold liquid pressure, since the diameter of the cold liquid delivery pipe is smaller than the diameter of the cold liquid output pipe, the cold liquid pressure at the end of the cold liquid delivery pipe is greater than the cold liquid pressure at the end of the cold liquid output pipe. This can create a pressure difference inside the shaft cylinder, which can discharge the cold liquid impurities remaining in the shaft cylinder. At the same time, by utilizing the high latent heat value of the cold liquid, the cooling effect on the sleeve and shaft cylinder is improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partially enlarged view of the material loosening mechanism of this utility model;

[0019] The markings in the diagram are: 1. Conical box, 2. Fixed plate, 3. Connecting cylinder, 4. Shaft seat, 5. Unloading mechanism, 51. Sleeve, 52. Shaft cylinder, 53. Cold liquid inlet pipe, 54. Cold liquid outlet pipe, 55. Unloading plate, 56. Fixed lug, 57. Fixed shaft, 58. Unloading blade, 59. Protruding column; 6. Swing assembly, 61. V-shaped plate, 62. Fixed hole one, 63. Fixed hole two, 64. Connecting shaft, 7. Connecting square rod, 8. H-beam, 9. Cylinder seat, 10. Cylinder one, 11. Cylinder two. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] This utility model provides a loosening and discharging device for a gas-based vertical shaft furnace:

[0022] like Figure 1 As shown, the conical box 1 is a cone shape with an inner opening. The inner surface of the conical box 1 is an arc-shaped surface. The conical box 1 is symmetrically fixed on the front and rear sides of the bottom of the fixing plate 2. The main purpose of setting the inner surface of the conical box 1 to an arc-shaped surface is twofold: First, it increases the fit between the inner surface of the conical box 1 and the outer wall of the gas-based vertical shaft furnace. Since the inner surface of the conical box 1 is welded and fixed to the outer wall of the gas-based vertical shaft furnace, a good fit between the inner surface of the conical box 1 and the outer wall of the gas-based vertical shaft furnace results in smaller gaps and improves the quality of the weld formation. Second, the hollow shape of the conical box 1 with an inner opening reduces the weight of the conical box 1 body and provides space for stress deformation displacement caused by high temperature, thereby improving the structural stability of the conical box 1.

[0023] like Figure 1 As shown, a through hole is provided in the center of the fixing plate 2, and the connecting cylinder 3 is fixedly installed on the upper part of the fixing plate 2. The connecting cylinder 3 is a hollow ring shape, and the diameter of the through hole in the center of the fixing plate 2 is equal to the inner diameter of the connecting cylinder 3. The through hole in the center of the fixing plate 2 and the connecting cylinder 3 are concentric.

[0024] The above-mentioned method involves opening a through hole in the center of the fixed plate 2, with the diameter of the through hole in the center of the fixed plate 2 being equal to the inner diameter of the connecting cylinder 3. When the connecting cylinder 3 is fixedly welded to the preheating zone and roasting zone of the gas-based vertical furnace, the through hole in the center of the fixed plate 2 and the connecting cylinder 3 form an upper and lower connected structure with the gas-based vertical furnace, facilitating the passage of smelting materials.

[0025] Since the inner diameter of the connecting cylinder 3 is smaller than the inner diameter of the gas-based vertical furnace, the upper and lower connections between the connecting cylinder 3 and the gas-based vertical furnace shell can be transitioned by welding a transitional conical cylinder.

[0026] like Figure 1As shown in Figure 2, three loosening mechanisms 5 are provided, which are fixedly installed on three sets of bearing seats 4 respectively. The loosening mechanism 5 includes a sleeve 51, which is fixed in the middle position of the shaft cylinder 52. The shaft cylinder 52 is hollow with both ends closed. The sleeve 51 and the shaft cylinder 52 radially pass through the body of the connecting cylinder 3. The front and rear ends of the shaft cylinder 52 are fixedly installed on a set of bearing seats 4 arranged symmetrically. The cold liquid conveying pipe 53 is fixedly installed on the right side of the rear end of the shaft cylinder 52, and the cold liquid output pipe 54 is fixedly installed on the left side of the rear end of the shaft cylinder 52. The cold liquid conveying pipe 53 and the cold liquid output pipe 54 are connected to the shaft cylinder 52. The liquid output pipes 54 are arranged horizontally in parallel; the loosening plates 55 are arranged longitudinally in groups at equal intervals on the upper surface of the sleeve 51, and two to four groups of loosening plates 55 are fixedly and horizontally and evenly around the upper surface of the sleeve 51; the loosening plates 55 are symmetrically arranged with front and rear fixed ears 56 in the longitudinal intervals; the feeding blades 58 are semi-circular, and the feeding blades 58 are installed in the middle of the symmetrically arranged fixed ears 56, and are fixed by passing through the feeding blades 58 and the fixed ears 56 through the fixed shafts 57; the protruding post 59 is fixedly arranged at the center of the arc-shaped surface at the top of the feeding blade 58.

[0027] The aforementioned arrangement of sleeve 51, shaft 52, loosening plate 55, fixing lug 56, fixing shaft 57, loosening blade 58, and protruding post 59, along with the intermittent 90° rotation of sleeve 51 and shaft 52, and the intermittent 90° rotation of loosening plate 55, loosening blade 58, and protruding post 59, achieves the loosening of smelting materials in the gas-based vertical shaft furnace, effectively preventing the smelting materials from caking. On the other hand, the gap between sleeve 51 and shaft 52 allows the loosened smelting materials to be discharged and fall into the heat exchanger, ensuring the smooth operation of ironmaking in the gas-based vertical shaft furnace.

[0028] The aforementioned fixing lug 56 and fixing shaft 57 allow the loosening blade 58 and protrusion 59 to be fixed on the fixing lug 56, thereby facilitating the maintenance and disassembly of the loosening blade 58 and saving time and labor.

[0029] like Figure 1 As shown, the coolant delivery pipe 53 is fixedly installed at the right rear end of the shaft cylinder 52, and the coolant output pipe 54 is fixedly installed at the left rear end of the shaft cylinder 52. The coolant delivery pipe 53 and the coolant output pipe 54 are arranged horizontally side by side. The diameter of the coolant delivery pipe 53 is smaller than the diameter of the coolant output pipe 54. The coolant delivery pipe 53 is fixedly connected to the output end of the coolant pump inside the coolant circulation system, and the coolant output pipe 54 is fixedly connected to the input end of the coolant circulation system.

[0030] With the aforementioned arrangement of the coolant delivery pipe 53 and coolant output pipe 54, under the condition of the same coolant pressure, since the diameter of the coolant delivery pipe 53 is smaller than the diameter of the coolant output pipe 54, the coolant pressure at the end of the coolant delivery pipe 53 is greater than the coolant pressure at the end of the coolant output pipe 54. This creates a pressure difference inside the shaft cylinder 52, which can discharge the coolant impurities remaining in the shaft cylinder 52, thereby improving the cooling effect inside the shaft cylinder 52.

[0031] The aforementioned coolant circulation system falls within the scope of existing technology, and its structure and working principle are well-known to those skilled in the art; therefore, there is no need to elaborate on its structure and working principle.

[0032] like Figure 1 As shown, a gap is reserved at the junction of the sleeve 51 and the outer arc surface of the connecting cylinder 3, and the gap is filled with a high-temperature resistant sealing material. The main purpose of this arrangement is twofold: firstly, to allow the sleeve 51 and the shaft cylinder 52 to rotate at the center position of the connecting cylinder 3; and secondly, to prevent the smelting materials in the gas-based vertical shaft furnace from leaking through the gap at the junction of the sleeve 51 and the outer arc surface of the connecting cylinder 3.

[0033] like Figure 1 As shown, three swing components 6 are provided, which are fixedly installed on the front end face of the unloading mechanism 5. The left end of the connecting square rod 7 is fixedly connected to the bottom of the left swing component 6, and the right end of the connecting square rod 7 is fixedly connected to the bottom of the right swing component 6. The middle position of the connecting square rod 7 is fixedly hinged to the middle position of the swing component 6 near the bottom by a pin. The swing component 6 includes a V-shaped plate 61, which is a V-shape with arcs at the top and bottom. The V-shaped plates 61 are symmetrically arranged front and back. Fixing hole 1 62 is opened at the upper position of the V-shaped plate 61, and fixing hole 2 63 is fixedly set at the lower position of the V-shaped plate 61. Fixing hole 1 62 and fixing hole 2 63 are through holes passing through the body of the V-shaped plate 61. Shaft 64 is fixedly installed in the second fixing hole 63 at the lower part of the V-shaped plate 61 which is symmetrically arranged front and rear, and the V-shaped plate 61 is connected as a whole; the diameter of the first fixing hole 62 is equal to the diameter of the shaft cylinder 52, and the first fixing hole 62 is fixedly installed at the front end of the shaft cylinder 52; mounting holes are opened at both ends of the connecting square rod 7, the mounting hole at the left end of the connecting square rod 7 is hinged to the bottom connecting shaft 64 of the V-shaped plate 61 of the left swing assembly 6, and the mounting hole at the right end of the connecting square rod 7 is hinged to the bottom connecting shaft 64 of the V-shaped plate 61 of the right swing assembly 6. The middle of the connecting square rod 7 passes through the middle of the middle swing assembly 6 and is fixedly hinged to the V-shaped plate 61 which is symmetrically arranged front and rear through a pin.

[0034] The main purpose of the above configuration is to fix the three swing components 6 and the connecting rod into a linkage-connected integral hinge structure by setting the V-shaped plate 61, fixing hole 1 62, fixing hole 2 63, connecting shaft 64 and mounting holes at both ends of the connecting square rod 7 of the swing component 6. With the extension or retraction action of the telescopic rod of cylinder 1 10 or cylinder 2 11 and the cooperation of the PLC control module, the shaft cylinder 52 of the three loosening mechanisms 5 on the three sets of shaft seats 4 can be rotated intermittently 90° to the left or right with the shaft seat 4 as the center, so that the loosening plate 55, loosening blade 58 and protrusion 59 on the sleeve 51 can be rotated intermittently 90° to the left or right.

[0035] like Figure 1 As shown, the left and right ends of H-steel 8 are fixedly mounted on the reinforcing ribs of the outer circumferential wall of the gas-based vertical furnace. The cylinder seats 9 are symmetrically fixedly mounted on the upper two ends of H-steel 8. The left end of the cylinder body of cylinder one 10 is fixedly hinged to the cylinder seat 9 at the left end of H-steel 8. The right end of the cylinder body of cylinder two 11 is fixedly hinged to the cylinder seat 9 at the right end of H-steel 8. The right end of the telescopic rod of cylinder one 10 is fixedly hinged to the bottom of the swing assembly 6 in the middle position. The left end of the telescopic rod of cylinder two 11 is fixedly hinged to the bottom of the swing assembly 6 in the middle position.

[0036] The main purpose of the above arrangement is that the extension and retraction of the cylinder 10 extension rod and the cylinder 2 extension rod work together to increase the intermittent rotational torque of the loosening plate 55, loosening blade 58 and protrusion 59 on the sleeve 51 to the left or right by 90°. Because the smelting material in the gas-based vertical furnace is relatively heavy, the loosening plate 55, loosening blade 58 and protrusion 59 do not have enough rotational torque to loosen the smelting material.

[0037] In this invention, the front sides of cylinders 10 and 11 are equipped with magnetic switches (not shown in the figure), and the air source solenoid reversing valve is connected to the PLC control module via a signal line. Although the aforementioned magnetic switches... Figure 1 Not shown in the diagram, but the magnetic switches for cylinders 10 and 11 are standard components purchased from external suppliers, well-known and understood by those skilled in the art; therefore, the structure and working principle of the magnetic switches need not be described in detail here. Figure 1-2As shown, the working process of the loosening and discharging device of this gas-based vertical shaft furnace is as follows: First, the PLC control module sends an opening control command to cylinder 10. At this time, the telescopic rod of cylinder 10 begins to extend to the right. At the same time, the PLC control module sends a synchronous retraction control command to cylinder 21. The telescopic rod of cylinder 21 retracts. Through the hinge action between the inner ends of the telescopic rods of cylinder 10 and cylinder 21 and the connecting shaft 64 at the bottom of the swing assembly 6V-shaped plate 61 in the middle position, the extension action of the telescopic rod of cylinder 10 and the retraction action of the telescopic rod of cylinder 21 together drive the swing assembly 6 in the middle position to swing to the right. At the same time, it drives the connecting square rod 7 to swing to the right. Driven by the rightward swing of the connecting square rod 7, through the connecting shaft 64 at the bottom of the left swing assembly 6V-shaped plate 61 and the right swing assembly 6V-shaped plate 61 at the left end and right end of the connecting square rod 7, the swing assembly 6 in the middle position swings to the right. The hinge action of the connecting shaft 64 at the bottom of the V-shaped plate 61 causes the left swing assembly 6 and the right swing assembly 6 to swing to the right. At this time, the left swing assembly 6, the middle swing assembly 6 and the right swing assembly 6 swing to the right at the same time, which drives the cylinders 52 of the three loosening mechanisms 5 on the three sets of bearings 4 to rotate 90° to the left around the bearing 4. Driven by the rotation of the cylinders 52 and sleeves 51 of the three loosening mechanisms 5 to the left, the loosening plate 55, loosening blade 58 and protrusion 59 on the sleeve 51 rotate 90° to the left.

[0038] When cylinder 10 completes its extension stroke and cylinder 2 11 completes its retraction stroke, the magnetic switches of cylinder 10 and cylinder 2 11 send position signals to the PLC control module. Upon receiving these signals, the PLC control module sends a retraction control command to cylinder 10 and an extension control command to cylinder 2 11. The telescopic rod of cylinder 10 retracts, and the telescopic rod of cylinder 2 11 begins its extension. At this time, the swing assembly 6 and the connecting rod 7 repeat the opposite swing motion, thus enabling the three unloading mechanisms 5's cylinders 52 on the three sets of bearings 4 to rotate 90° to the right around the bearing 4. Driven by the 90° rightward rotation of the cylinders 52 and sleeves 51 of the three unloading mechanisms 5... The loosening plate 55, loosening blade 58, and protrusion 59 on the sleeve 51 are rotated 90° to the right. Under the linkage of the PLC control module, the air source solenoid reversing valve, cylinder 10, cylinder 21, bearing 4, and loosening mechanism 5, the shafts 52 of the three loosening mechanisms 5 on the three sets of bearing 4 are intermittently rotated 90° to the left or right with the bearing 4 as the center. This causes the loosening plate 55, loosening blade 58, and protrusion 59 on the sleeve 51 to rotate intermittently 90° to the left or right, loosening the semi-molten material (caking material) in the preheating zone and roasting zone. Finally, the smelting material that has been forcibly loosened falls into the homogenizing zone of the gas-based vertical furnace through the gap between the loosening mechanisms 5, where it undergoes further oxidation-reduction reaction to realize the iron smelting operation.

[0039] Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A loosening and discharging device for a gas-based vertical shaft furnace, comprising a conical box, a fixed plate, and a connecting cylinder, wherein the conical box is a cone shape with an inner opening, the inner surface of the conical box is an arc-shaped surface, and the conical box is symmetrically fixedly arranged on the front and rear sides of the bottom of the fixed plate; characterized in that: The fixed plate has a through hole in its center, and the connecting cylinder is fixedly installed on the upper part of the fixed plate. The connecting cylinder is a hollow ring, and the diameter of the through hole in the center of the fixed plate is equal to the inner diameter of the connecting cylinder. Three sets of bearing seats are provided, with two symmetrically arranged front and rear as one set. The three sets of bearing seats are equidistantly fixed at the front and rear edges of the fixed plate. Three material loosening mechanisms are provided, each fixedly installed on one of the three sets of bearing seats. These mechanisms are used to intermittently rotate the material in the gas-based vertical shaft furnace, thereby loosening and discharging the material. Three swing components are provided, each fixedly installed on the front end face of the material loosening mechanism. The left end of the connecting rod is connected to the left swing component. The bottom of the moving component is fixedly connected, the right end of the connecting square rod is fixedly connected to the bottom of the right swing component, and the middle position of the connecting square rod is fixedly hinged to the bottom position of the swing component in the middle position by a pin; the left and right ends of the H-steel are fixedly installed on the reinforcing ribs of the outer wall of the gas-based vertical furnace, and the cylinder seats are symmetrically fixedly installed at the upper two ends of the H-steel. The left end of the cylinder body of cylinder one is fixedly hinged to the cylinder seat at the left end of the H-steel, and the right end of the cylinder body of cylinder two is fixedly hinged to the cylinder seat at the right end of the H-steel; the right end of the telescopic rod of cylinder one is fixedly hinged to the bottom of the swing component in the middle position, and the left end of the telescopic rod of cylinder two is fixedly hinged to the bottom of the swing component in the middle position.

2. The loose material discharge device for a gas-based vertical shaft furnace according to claim 1, characterized in that: The central through hole of the fixed plate is concentric with the connecting cylinder, the wall thickness of the connecting cylinder is equal to the thickness of the gas-based vertical furnace, and the inner diameter of the connecting cylinder is smaller than the inner diameter of the gas-based vertical furnace.

3. The loosening and discharging device for a gas-based vertical shaft furnace according to claim 1, characterized in that: The loosening mechanism includes a sleeve fixed in the middle of a shaft cylinder, which is hollow with both ends closed. The sleeve and shaft cylinder radially pass through the connecting cylinder body. The front and rear ends of the shaft cylinder are fixedly mounted on a set of symmetrically arranged shaft seats. A cold liquid conveying pipe is fixedly mounted on the right side of the rear end of the shaft cylinder, and a cold liquid output pipe is fixedly mounted on the left side of the rear end of the shaft cylinder. The cold liquid conveying pipe and the cold liquid output pipe are arranged horizontally side by side. Loosening plates are arranged longitudinally in groups at equal intervals on the upper surface of the sleeve. Two to four groups of loosening plates are horizontally and evenly fixed around the upper surface of the sleeve. Fixed ears are symmetrically arranged in the longitudinal intervals of the loosening plates. The feeding blade is semi-circular and is installed in the middle of the symmetrically arranged fixed ears. It is fixed by a fixed shaft passing through the feeding blade and the fixed ears. A protruding post is fixedly mounted at the center of the arc-shaped surface at the top of the feeding blade.

4. The loosening and discharging device for a gas-based vertical shaft furnace according to claim 3, characterized in that: The diameter of the cold liquid delivery pipe is smaller than the diameter of the cold liquid output pipe.

5. The loose material discharge device for a gas-based vertical shaft furnace according to claim 3, characterized in that: A gap is reserved at the junction of the sleeve and the outer arc surface of the connecting cylinder.

6. The loosening and discharging device for a gas-based vertical shaft furnace according to claim 1, characterized in that: The swing assembly includes a V-shaped plate, which is V-shaped with arcs at the top and bottom. The V-shaped plate is symmetrically arranged front and back. Fixing hole one is opened at the upper position of the V-shaped plate, and fixing hole two is fixedly arranged at the lower position of the V-shaped plate. Fixing hole one and fixing hole two are through holes passing through the body of the V-shaped plate. The connecting shaft is fixedly installed in fixing hole two at the lower part of the symmetrically arranged V-shaped plate and connects the symmetrically arranged V-shaped plates into one piece. The diameter of fixing hole one is equal to the diameter of the shaft cylinder, and fixing hole one is fixedly installed at the front end of the shaft cylinder.

7. The loose material discharge device for a gas-based vertical shaft furnace according to claim 1, characterized in that: The connecting rod has mounting holes at both ends. The left mounting hole of the connecting rod is hinged to the bottom connecting shaft of the V-shaped plate of the left swing assembly. The right mounting hole of the connecting rod is hinged to the bottom connecting shaft of the V-shaped plate of the right swing assembly. The middle of the connecting rod passes through the middle of the middle swing assembly and is fixedly hinged to the V-shaped plates arranged symmetrically at the front and back by a pin.

8. The loose material discharge device for a gas-based vertical shaft furnace according to claim 1, characterized in that: The right end of the telescopic rod of cylinder one is fixedly hinged to the bottom connecting shaft of the V-shaped plate of the swing assembly in the middle position, and the left end of the telescopic rod of cylinder two is fixedly hinged to the bottom connecting shaft of the V-shaped plate of the swing assembly in the middle position.

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