Charging device for smelting furnace and smelting system

Abstract

The application discloses a smelting furnace feeding device, which comprises a feeding mechanism, a distributing mechanism, two weighing conveyors and two feeding mechanisms. The distributing mechanism has two discharge ports, and the distributing mechanism can adjust the discharging amount of the two discharge ports; each weighing conveyor is arranged between a corresponding discharge port and a corresponding feeding mechanism to convey the material output by the discharge port to the feeding mechanism, and the weighing conveyor can weigh the material. The smelting furnace feeding device can detect the amount of the material, and the distributing mechanism can adjust the discharging amount of the two discharge ports according to the weight data detected by the weighing conveyor, so that the amounts of the materials output by the two discharge ports are close, thereby improving the uniformity of the distribution, matching the air inlet amount of the primary air port with the materials input from both sides, and further ensuring that the smelting furnace can stably operate. The application also discloses a smelting system.

Description

Technical Field

[0001] This application belongs to the field of metal smelting technology, specifically relating to a smelting furnace feeding device and smelting system. Background Technology

[0002] To improve charging efficiency, some smelting furnaces typically employ a dual-sided charging method. Currently, plow-type unloaders are commonly used for material distribution, such as installing a plow-type unloader on a conveyor belt to divide the material on the conveyor belt into two paths, allowing the material to enter from both sides of the smelting furnace. However, plow-type unloaders are prone to swaying during operation, and the material conveyed on the conveyor belt is often not evenly distributed. This results in a significant difference in the amount of material conveyed on the two paths, indicating poor material distribution uniformity, which affects the stable operation of the smelting furnace. Utility Model Content

[0003] The technical problem to be solved by this application is that the existing method of feeding materials on both sides of the smelting furnace is prone to uneven feeding on both sides, which affects the stable operation of the smelting furnace. In order to solve this technical problem, a smelting furnace feeding device and smelting system are provided that can feed materials on both sides of the smelting furnace with high feeding uniformity to ensure the stable operation of the smelting furnace.

[0004] The technical solution proposed in this application is as follows:

[0005] A charging device for a smelting furnace, comprising:

[0006] Feeding mechanism;

[0007] The material distribution mechanism is located downstream of the feeding mechanism. The material distribution mechanism has two discharge ports and can adjust the discharge volume of the two discharge ports.

[0008] The furnace has two feeding mechanisms and two weighing conveyor belts. The two feeding mechanisms are respectively located at the feeding ports on both sides of the furnace. Each weighing conveyor belt is located between a corresponding discharge port and a corresponding feeding mechanism to transport the material output from the discharge port to the feeding mechanism. The weighing conveyor belt is capable of weighing the material.

[0009] Using the aforementioned smelting furnace feeding device, the material distribution mechanism conveys the material to two weighing conveyor belts. The material is added from both sides of the smelting furnace 200 via the weighing conveyor belts and the feeding mechanism. The weighing conveyor belts can detect the amount of material, and the material distribution mechanism can adjust the discharge rate of the two outlets based on the weight data detected by the weighing conveyor belts, so that the amount of material output from the two outlets is similar, thereby improving the uniformity of material distribution. This ensures that the material input from both sides can match the air intake of the primary tuyeres, thus ensuring the stable operation of the smelting furnace 200.

[0010] Furthermore, the material distribution mechanism includes a material distribution bin and a regulating valve. The material distribution bin is located downstream of the feeding mechanism. The material distribution bin has two discharge ports, and each discharge port is equipped with a regulating valve to adjust the discharge volume of the discharge port.

[0011] Furthermore, the regulating valve is a bar valve.

[0012] Furthermore, it also includes an intermediate conveyor belt, which is disposed between one of the discharge ports and the weighing conveyor belt to transport the material output from the discharge port to the weighing conveyor belt; or

[0013] It also includes two intermediate conveyor belts, each of which is disposed between the corresponding discharge port and the weighing conveyor belt to transport the material output from the discharge port to the weighing conveyor belt.

[0014] Furthermore, it also includes a dust removal mechanism, which is provided at the unloading end of the weighing conveyor belt.

[0015] Furthermore, the feeding mechanism includes a feeding conveyor belt and a discharge hopper. The feeding conveyor belt is located downstream of the weighing conveyor belt and is capable of conveying materials to the discharge hopper. The discharge hopper is provided corresponding to the feeding port of the smelting furnace.

[0016] Furthermore, the feeding hopper includes a first feeding hopper and a second feeding hopper;

[0017] In the conveying direction of the feeding conveyor belt, the first hopper is located downstream of the second hopper, and the first hopper corresponds to the discharge end of the feeding conveyor belt;

[0018] The feeding mechanism also includes a guide component, which is movably arranged relative to the feeding conveyor belt, and the guide component can pass through avoidance positions and guiding positions during its movement.

[0019] When the guide component is in the avoidance position, the feeding conveyor belt can transport the material to the first discharge hopper; when the guide component is in the guiding position, the guide component can guide the material on the feeding conveyor belt to the second discharge hopper.

[0020] Furthermore, there are multiple second feeding hoppers and multiple guiding components. The multiple second feeding hoppers and multiple guiding components are arranged at intervals along the conveying direction of the feeding conveyor belt and are set in a one-to-one correspondence. Each guiding component can move independently relative to the feeding conveyor belt.

[0021] Furthermore, the feeding mechanism also includes a material guiding drive component, which is connected to the material guiding component to drive the material guiding component to move between the material guiding position and the avoidance position.

[0022] A smelting system includes a smelting furnace and a smelting furnace feeding device. Attached Figure Description

[0023] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0024] Figure 1 This is a schematic diagram of the structure of a smelting system provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 The diagram shows a top view of the smelting system.

[0026] Label Explanation:

[0027] 100. Charging device for smelting furnace; 110. Feeding mechanism; 120. Distributing mechanism; 121. Discharge port; 130. Weighing conveyor belt; 140. Feeding mechanism; 141. Feeding conveyor belt; 142. First hopper; 143. Second hopper; 144. Guide component; 150. Intermediate conveyor belt; 200. Smelting furnace. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] To facilitate understanding of the technical solution of this application, the existing method of feeding material from both sides of a smelting furnace is described below: Existing smelting furnaces typically use a plow-type unloader for material distribution. The distributed material is then conveyed to both sides of the smelting furnace along two conveyor paths. Each side is also equipped with a primary tuyer to introduce air or oxygen-enriched gas. The amount of gas introduced into each primary tuyer needs to correspond to the amount of material introduced into each side to ensure stable operation of the smelting furnace. However, the plow-type unloader is prone to swaying during operation, and the material on the conveyor belt is usually not evenly distributed, resulting in a significant difference in the amount of material conveyed by the two conveyor paths, i.e., poor material distribution uniformity. Since the total amount of material is constant, and the air intake of each primary tuyer is also set, if there is more material on one conveyor path, the material on the other conveyor path will correspondingly decrease, leading to a large difference in the amount of material input from both sides of the smelting furnace. This mismatch between the material input from both sides and the air intake of the primary tuyer leads to unstable operation of the smelting furnace.

[0035] like Figure 1 and Figure 2 As shown, this application provides a smelting system, including a smelting furnace feeding device 100 and a smelting furnace 200. The smelting furnace feeding device 100 can feed materials to both sides of the smelting furnace 200.

[0036] Furthermore, the smelting furnace charging device 100 includes a feeding mechanism 110, a distributing mechanism 120, two weighing conveyor belts 130, and two feeding mechanisms 140. The feeding mechanism 110 is used to transport materials to the distributing mechanism 120, which in turn transports the materials to the two weighing conveyor belts 130, and then the two weighing conveyor belts 130 transport them to the two feeding mechanisms 140. The two feeding mechanisms 140 are respectively located at the feeding ports on both sides of the smelting furnace 200, so that materials can be added to both sides of the smelting furnace 200 through the two feeding mechanisms 140. The weighing conveyor belts 130 are capable of weighing the materials and can be weighing belt conveyors.

[0037] Furthermore, the material distribution mechanism 120 has two discharge ports 121, and the material distribution mechanism 120 can adjust the discharge volume of the two discharge ports 121. Each weighing conveyor belt 130 is disposed between a corresponding discharge port 121 and a corresponding feeding mechanism 140 to transport the material output from the discharge port 121 to the corresponding feeding mechanism 140. In this way, the material distribution mechanism 120 can adjust the discharge volume of the two discharge ports 121 according to the weight data detected by the weighing conveyor belt 130, thereby ensuring that the amount of material transported to the two weighing conveyor belts 130 is similar.

[0038] It should be noted that the material distribution mechanism 120 adjusts the discharge volume of the two outlets 121 based on the weight data of the weighing conveyor belt 130. For example, if the weight data of the two weighing conveyor belts 130 differs significantly, meaning the discharge volume of the two outlets 121 differs significantly, the discharge volume of the outlet 121 with the higher discharge volume can be reduced, or the discharge volume of the outlet 121 with the lower discharge volume can be increased, or both can be performed simultaneously. Furthermore, the adjustment of the discharge volume of outlet 121 can be achieved either automatically by a control mechanism after acquiring the weight data, or manually by an operator after acquiring the weight data; no limitation is imposed here.

[0039] Using the aforementioned smelting furnace feeding device 100, the material distribution mechanism 120 conveys the material to two weighing conveyor belts 130. The material is added from both sides of the smelting furnace 200 via the weighing conveyor belts 130 and the feeding mechanism 140. The weighing conveyor belts 130 can detect the amount of material. The material distribution mechanism 120 can adjust the discharge volume of the two discharge ports 121 according to the weight data detected by the weighing conveyor belts 130, so that the amount of material output from the two discharge ports 121 is similar, thereby improving the uniformity of material distribution. This ensures that the material input from both sides can match the air intake volume of the primary air inlet, thereby ensuring the stable operation of the smelting furnace 200.

[0040] It should be noted that the amount of material output from the two discharge ports 121 is similar because existing technology cannot reliably guarantee that the amount of material output from the two discharge ports 121 is exactly the same. Of course, within the allowable error range, the amount of material output from the two discharge ports 121 can also be considered to be the same.

[0041] In one embodiment, the discharge end of the feeding mechanism 110 is located above the distributing mechanism 120 to transport materials to the distributing mechanism 120, whereby the distributing mechanism 120 performs distributing processing on the materials. Specifically, the feeding mechanism 110 uses a conveyor belt to transport the materials.

[0042] In one embodiment, the material distribution mechanism 120 includes a material distribution bin and a regulating valve. The material distribution bin is located downstream of the feeding mechanism 110, specifically below the discharge end of the feeding mechanism 110. The bottom of the material distribution bin has two discharge ports 121, each equipped with a regulating valve to adjust the discharge volume of the discharge port 121. Therefore, after obtaining the weight data of the weighing conveyor belt 130, the discharge volume of the discharge port 121 can be adjusted by the regulating valve. This can be achieved by controlling the regulating valve's operation through a control mechanism or by manual adjustment. Optionally, the regulating valve can be a bar valve or other valve capable of regulating the flow rate and controlling the opening and closing of the discharge port 121.

[0043] In one embodiment, the smelting furnace charging device 100 further includes an intermediate conveyor belt 150. The intermediate conveyor belt 150 is disposed between one of the discharge ports 121 and the weighing conveyor belt 130 to transport the material output from the discharge port 121 to the weighing conveyor belt 130. It should be explained that in actual production, due to space or other limitations, the material distribution mechanism 120 may not be located in the middle of the smelting furnace 200; that is, the material distribution mechanism 120 may be located closer to one side of the smelting furnace 200, for example... Figure 1 The material distribution mechanism 120 is located on the right side of the smelting furnace 200. At this time, the material can be transported to the weighing conveyor belt 130 on the left side by the middle conveyor belt 150.

[0044] by Figure 1 For example, the left weighing conveyor belt 130 will pick up materials after the right weighing conveyor belt 130. For materials discharged from both outlets 121 at the same time, there is also a difference in the detection time between the left and right weighing conveyor belts 130. That is, the detection time of the right weighing conveyor belt 130 is earlier than that of the left weighing conveyor belt 130. The difference in detection time can be reduced or avoided by speeding up the transmission speed of the middle conveyor belt 150 or controlling the conveying rhythm of the weighing conveyor belt 130.

[0045] To control the conveying rhythm of the weighing conveyor belt 130, the material distribution mechanism 120 needs to be set to intermittent discharge, which can be achieved by discharging a preset amount of material from both discharge ports 121 at a time. The right weighing conveyor belt 130 directly receives the discharged material, while the left weighing conveyor belt 130 receives the material conveyed by the middle conveyor belt 150. Both weighing conveyor belts 130 can maintain a conveying state during the material receiving process, but will not directly convey the material to the feeding mechanism 140 to improve the uniformity of material distribution on the weighing conveyor belts 130. Next, the two weighing conveyor belts 130 detect the weight of the material. If there is a difference between the two, the discharge port 121 corresponding to the weighing conveyor belt 130 with the smaller weight data can be controlled to discharge a certain amount of material until the difference in weight data between the two weighing conveyor belts 130 meets the requirements.

[0046] Of course, in other embodiments, the position of the material distribution mechanism 120 can be roughly adjusted according to site requirements, and then two intermediate conveyor belts 150 can be set. Each intermediate conveyor belt 150 is set between the corresponding discharge port 121 and the weighing conveyor belt 130 to transport the material output from the discharge port 121 to the corresponding weighing conveyor belt 130. At this time, the conveying speed of the two intermediate conveyor belts 150 can be directly controlled to ensure that the material on the two intermediate conveyor belts can be transported to the two weighing conveyor belts 130 at the same time.

[0047] In one embodiment, the smelting furnace charging device 100 further includes a dust removal mechanism. The dust removal mechanism is positioned at the discharge end of the weighing conveyor belt 130, specifically at the end of the weighing conveyor belt 130 near the feeding mechanism 140, to adsorb and recover generated dust. It should be noted that the dust removal mechanism uses negative pressure to adsorb dust, and it is a conventional mechanism that can extend to the discharge end of the weighing conveyor belt 130 via a negative pressure pipe. Alternatively, the negative pressure pipe can also be positioned corresponding to the feeding mechanism 110, the distributing mechanism 120, the intermediate conveyor belt 150, and the feeding mechanism 140; no limitation is imposed here.

[0048] In one embodiment, the feeding mechanism 140 includes a feeding conveyor belt 141 and a hopper. The feeding conveyor belt 141 is located downstream of the weighing conveyor belt 130 and can transport materials to the hopper. The hopper is provided with a feeding port corresponding to the smelting furnace 200 so as to add materials into the smelting furnace 200.

[0049] In one embodiment, the feeding hopper includes a first feeding hopper 142 and a second feeding hopper 143. In the conveying direction of the feeding conveyor belt 141, the first feeding hopper 142 is located downstream of the second feeding hopper 143, and the first feeding hopper 142 corresponds to the feeding end of the feeding conveyor belt 141. It is understood that in this embodiment, each side of the smelting furnace 200 has a feeding port corresponding to the first feeding hopper 142 and the second feeding hopper 143. In other embodiments, each side of the smelting furnace 200 may have only one feeding port, with one feeding hopper corresponding to each side.

[0050] Furthermore, the feeding mechanism 140 also includes a guide component 144. The guide component 144 is movably disposed relative to the feeding conveyor belt 141, and the guide component 144 can pass through a clearance position and a guiding position during its movement; when the guide component 144 is in the clearance position, the feeding conveyor belt 141 can transport the material to the first discharge hopper 142; when the guide component 144 is in the guiding position, the guide component 144 can guide the material on the feeding conveyor belt 141 to the second discharge hopper 143.

[0051] It should be explained that if the first hopper 142 becomes blocked or malfunctions, the material can be guided to the second hopper 143 via the guide component 144; if the second hopper 143 becomes blocked or malfunctions, the guide component 144 can be moved to an obstacle avoidance position, allowing the material to be conveyed to the first hopper 142. Of course, the material can also be conveyed to either the first hopper 142 or the second hopper 143 depending on other circumstances, and no restrictions are imposed here.

[0052] Additionally, it should be noted that the guide component 144 can be plate-shaped. When the guide component 144 moves to the guiding position, it contacts the surface of the feeding conveyor belt 141. The guide component 144 is inclined relative to the conveying direction of the feeding conveyor belt 141 and completely covers the feeding conveyor belt 141 in the width direction. In conjunction with the transmission of the feeding conveyor belt 141, all the material on the feeding conveyor belt 141 can be guided to the second discharge hopper 143.

[0053] In practical applications, there are multiple second feeding hoppers 143 and multiple guide components 144. These multiple second feeding hoppers 143 and multiple guide components 144 are arranged at intervals along the conveying direction of the feeding conveyor belt 141, and are configured in a one-to-one correspondence. Each guide component 144 can move independently relative to the feeding conveyor belt 141. Thus, by controlling any guide component 144 to move to the guiding position, the material can be guided to the corresponding second feeding hopper 143. Of course, if all guide components 144 are in the guiding position, the material will be conveyed to the corresponding second feeding hopper 143 under the action of the upstream guide component 144 (in the conveying direction of the feeding conveyor belt 141).

[0054] In one embodiment, the feeding mechanism 140 further includes a guiding drive component. The guiding drive component is connected to the guiding component 144 to drive the guiding component 144 to move between a guiding position and a clearance position. Specifically, the guiding drive component can be a lifting drive component to drive the guiding component 144 to rise and fall relative to the feeding conveyor belt 141, and when the guiding component 144 descends to the guiding position, it can contact the feeding conveyor belt 141. In other embodiments, the guiding drive component can also cooperate with a rotation drive component and a lifting drive component to drive the guiding component 144 to rotate and rise and fall. The lifting drive component can be a pneumatic cylinder or an electric cylinder, and the rotation drive component can be a motor. Of course, the guiding drive component can also be configured in other forms, as long as it can drive the guiding component 144 to move between the guiding position and the clearance position; no limitation is imposed here.

[0055] In summary, the smelting furnace charging device 100 and smelting system provided in this application have at least the following advantages:

[0056] 1. The material distribution mechanism 120 works in conjunction with the weighing conveyor belt 130 to achieve more uniform material distribution, thereby making the operation of the smelting furnace 200 more stable;

[0057] 2. It can adsorb and recover dust through the dust removal mechanism, avoiding dust pollution to the environment, and can also realize dust reuse, reducing waste;

[0058] 3. Multiple hoppers are set up for material feeding. If one hopper is blocked or malfunctions, material can be fed through other hoppers without stopping the machine for maintenance, thus reducing maintenance costs.

[0059] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging device for a smelting furnace, characterized in that, include: Feeding mechanism; The material distribution mechanism is located downstream of the feeding mechanism. The material distribution mechanism has two discharge ports and can adjust the discharge volume of the two discharge ports. The furnace has two feeding mechanisms and two weighing conveyor belts. The two feeding mechanisms are respectively located at the feeding ports on both sides of the furnace. Each weighing conveyor belt is located between a corresponding discharge port and a corresponding feeding mechanism to transport the material output from the discharge port to the feeding mechanism. The weighing conveyor belt is capable of weighing the material.

2. The smelting furnace feeding device according to claim 1, characterized in that, The material distribution mechanism includes a material distribution bin and a regulating valve. The material distribution bin is located downstream of the feeding mechanism. The material distribution bin has two discharge ports. Each discharge port is equipped with a regulating valve to adjust the discharge volume of the discharge port.

3. The smelting furnace feeding device according to claim 2, characterized in that, The regulating valve is a bar valve.

4. The smelting furnace feeding device according to claim 1, characterized in that, It also includes an intermediate conveyor belt, which is disposed between one of the discharge ports and the weighing conveyor belt to transport the material output from the discharge port to the weighing conveyor belt; or It also includes two intermediate conveyor belts, each of which is disposed between the corresponding discharge port and the weighing conveyor belt to transport the material output from the discharge port to the weighing conveyor belt.

5. The smelting furnace charging device according to claim 1, characterized in that, It also includes a dust removal mechanism, which is set at the unloading end of the weighing conveyor belt.

6. The smelting furnace charging device according to claim 1, characterized in that, The feeding mechanism includes a feeding conveyor belt and a discharge hopper. The feeding conveyor belt is located downstream of the weighing conveyor belt and can transport materials to the discharge hopper. The discharge hopper is set corresponding to the feeding port of the smelting furnace.

7. The smelting furnace charging device according to claim 6, characterized in that, The feeding hopper includes a first feeding hopper and a second feeding hopper; In the conveying direction of the feeding conveyor belt, the first hopper is located downstream of the second hopper, and the first hopper corresponds to the discharge end of the feeding conveyor belt; The feeding mechanism also includes a guide component, which is movably arranged relative to the feeding conveyor belt, and the guide component can pass through avoidance positions and guiding positions during its movement. When the guide component is in the avoidance position, the feeding conveyor belt can transport the material to the first discharge hopper; when the guide component is in the guiding position, the guide component can guide the material on the feeding conveyor belt to the second discharge hopper.

8. The smelting furnace charging device according to claim 7, characterized in that, There are multiple second feeding hoppers and multiple guiding components. The multiple second feeding hoppers and multiple guiding components are arranged at intervals along the conveying direction of the feeding conveyor belt and are set in a one-to-one correspondence. Each guiding component can move independently relative to the feeding conveyor belt.

9. The smelting furnace charging device according to claim 7, characterized in that, The feeding mechanism further includes a material guiding drive component, which is connected to the material guiding component to drive the material guiding component to move between the material guiding position and the avoidance position.

10. A smelting system, characterized in that, It includes a smelting furnace and a smelting furnace feeding device as described in any one of claims 1-9.

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