A smelting furnace feeding system and control method

Abstract

The present invention provides a smelting furnace feeding system that can accurately load materials into the hopper, improving the smelting furnace's incineration efficiency while ensuring a safe production environment. The system comprises a raw material silo, a mixing silo, a raw material mixing belt conveyor, and a smelting furnace top belt conveyor. The raw material mixing belt conveyor is positioned below the raw material discharge port of the raw material silo. Belt scales are positioned between the raw material silo and the raw material mixing belt conveyor, and below the raw material outlet of each silo. The mixing silo is positioned below the mixed material discharge port of the raw material mixing belt conveyor, and a belt elevator is positioned between the mixing silo and the smelting furnace top belt conveyor. This patent also discloses a smelting furnace feeding control method.

Description

Technical Field

[0001] The present invention relates to the technical field of smelting furnaces, and in particular to a smelting furnace feeding system and a control method. Background Art

[0002] In the existing technology, the operation of feeding materials into the hopper of the smelting furnace is mostly done manually by workers. The amount of material entering the hopper needs to be manually controlled by technicians based on their experience. It is impossible to accurately control the material ratio in the hopper, resulting in low furnace incineration efficiency. At the same time, inaccurate ratios also lead to safety risks in the operation of the smelting furnace. Summary of the Invention

[0003] To address the issue of inaccurate proportioning and potential safety hazards associated with manually batching the smelting furnace hopper, the present invention provides a smelting furnace feeding system that accurately batches the hopper, improving the furnace's incineration efficiency while ensuring a safe production environment. This patent also discloses a smelting furnace feeding control method.

[0004] The technical solution of the present invention is as follows: a smelting furnace feeding system, characterized in that it includes: a raw material bin, a mixing bin, a raw material mixing belt conveyor, and a smelting furnace top belt conveyor;

[0005] The smelting furnace top belt conveyor is arranged at the top feed port of the smelting furnace;

[0006] The raw material mixing belt conveyor is arranged below the raw material discharge port of the raw material bin; a belt scale is respectively arranged between the raw material bin and the raw material mixing belt conveyor and below the raw material outlet of each raw material bin;

[0007] The mixing bin is arranged below the mixture discharge port of the raw material mixing belt conveyor, and a belt elevator is arranged between the mixing bin and the smelting furnace top belt conveyor.

[0008] It is further characterized by:

[0009] It also includes a transfer belt conveyor, which is realized based on a short belt conveyor and is arranged between the raw material outlet of each raw material bin and the belt scale;

[0010] The raw material mixing belt conveyor and the belt elevator are respectively provided with an anti-deviation switch;

[0011] It also includes a mobile belt conveyor for batching and an industrial camera. The mobile belt conveyor is arranged above the feeding port of the raw material warehouse. The shooting range of the industrial camera includes all the feeding ports of the raw material warehouse.

[0012] The raw material warehouse includes: dry sludge warehouse, quartz stone warehouse, calcium carbonate warehouse and carbon concentrate warehouse;

[0013] Each of the raw material bin and the mixing bin is provided with a vibrating machine.

[0014] A method for controlling feeding of a smelting furnace, characterized in that it comprises the following steps:

[0015] S1: setting a timed start time and start duration for the corresponding rapping machines of the mixing bin and each raw material bin, and starting the rapping machines at a fixed time to discharge the mixing bin and the raw material bin;

[0016] S2: setting a material dropping threshold for a belt scale provided below a raw material discharge port of each raw material bin; when the weight of the raw material on each belt scale reaches the material dropping threshold, the belt scale is started to drop the material;

[0017] S3: The raw material mixing belt conveyor located below the discharge port of the belt scale is set to a normally open state, and all the raw materials falling onto the raw material mixing belt conveyor are fed into the mixing bin together for mixing in real time;

[0018] S4: The belt elevator located below the mixing bin is set to a normally open state, and all the raw materials falling onto the belt elevator are fed into the top belt conveyor of the smelting furnace in real time;

[0019] S5: The belt conveyor on the top of the smelting furnace is set to a normally open state, and all the mixed raw materials falling on it are fed into the top feeding port of the smelting furnace in real time.

[0020] It is further characterized by:

[0021] The transfer belt conveyor between the raw material outlet of the raw material bin and the belt scale is set to a normally open state, and all raw materials falling onto the transfer belt conveyor are transferred to the belt scale in real time;

[0022] During the implementation of steps S3 and S4, the operating status of the raw material mixing belt conveyor and the belt elevator is detected by the anti-deviation switch. Once any of the anti-deviation switches detects a deviation signal, the operation of the entire system is stopped;

[0023] Before implementing step S1, the raw material bin is loaded with materials via a movable belt, and the feeding port of the raw material bin is monitored by an industrial camera.

[0024] The present invention provides a smelting furnace feeding system, which determines the weight of raw materials discharged from each raw material bin by means of a belt scale, thereby ensuring that the ratio of the raw materials after subsequent mixing is accurate; the raw materials are initially mixed in the process of falling into the raw material mixing belt conveyor via the belt scale, and are fully mixed after falling into the mixing bin by the raw material mixing belt conveyor. The entire process does not require manual operation by workers, and the material ratio can be accurately achieved, as well as the material is thoroughly mixed. This not only improves the combustion efficiency of the smelting furnace, but also improves production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the automatic feeding system of the smelting furnace in this patent. DETAILED DESCRIPTION

[0026] like Figure 1 As shown, the present invention comprises a smelting furnace feeding system, characterized by comprising: a raw material bin 2, a mixing bin 7, a raw material mixing belt conveyor 6, and a smelting furnace top belt conveyor 9. In this embodiment, the raw material bin 2 comprises: a dry sludge bin 2-1, a quartz stone bin 2-2, a calcium carbonate bin 2-3, and a carbon concentrate bin 2-4. A mobile belt conveyor 1 is positioned above the feed opening of the raw material bin 2. The imaging range of an industrial camera 10 encompasses the feed openings of all raw material bins 2. In practice, mixed dry sludge and other raw materials are delivered to the mobile belt conveyor 1 via a conveyor belt, which then distributes the materials to each of the four raw material bins 2. During material distribution, an operator monitors the situation in real time via the industrial camera 10 and performs material distribution operations via a host computer (not shown). This eliminates the need for on-site operator interaction, ensuring personal safety and enabling real-time replenishment of all raw material bins.

[0027] The raw material mixing belt conveyor 6 is arranged below the raw material discharge port of the raw material bin 2; a belt scale 5 is respectively arranged between the raw material bin 2 and the raw material mixing belt conveyor 6 and below the raw material outlet of each raw material bin 2; the belt scale 5 is used to control the discharge amount of each raw material bin 2 to ensure that the feed of the smelting furnace is accurately proportioned.

[0028] The transfer belt conveyor 4 is realized based on a short belt conveyor and is arranged between the raw material outlet of each raw material bin 2 and the belt scale 5; if the raw materials discharged from the raw material discharge port of the raw material bin 2 fall directly on the belt scale 5, the raw materials will have a relatively large impact force on the belt scale 5, which will cause the weighing results of the belt scale 5 to fluctuate greatly. A transfer belt conveyor 4 is set to transfer the raw materials discharged from the raw material bin 2. The raw materials discharged from the raw material bin 2 first fall onto the transfer belt conveyor 4, and then fall onto the belt scale 5 from the transfer belt conveyor 4, ensuring the accuracy of the weighing of the belt scale 5, and further ensuring that the feed to the smelting furnace is accurately proportioned.

[0029] The smelting furnace top belt conveyor 9 is arranged at the top feeding port of the smelting furnace; a mixing bin 7 is arranged below the mixed material discharge port of the raw material mixing belt conveyor 6, and a belt elevator 8 is arranged between the mixing bin 7 and the smelting furnace top belt conveyor 9 to send the thoroughly mixed raw materials in the mixing bin 7 to the smelting furnace top belt conveyor 9 arranged on the top of the smelting furnace (not marked in the figure), and then sent to the top feeding port of the smelting furnace by the smelting furnace top belt conveyor 9 to complete the feeding operation of the smelting furnace.

[0030] The raw materials falling from the raw material bin 2 are controlled in proportion by a belt scale 5 and then fall onto a raw material mixing belt conveyor 6. During the falling process, the raw materials are initially mixed. The initially mixed raw materials are then sent to a mixing bin 7 for further mixing via the raw material mixing belt conveyor 6. The mixed raw materials are then sent to a top belt conveyor 9 of the smelting furnace by a belt elevator 8 to feed the smelting furnace.

[0031] In the technical solution of this patent, the material transmission between devices is completed by designing the physical positions of the raw material bin 2, the belt scale 5, the raw material mixing belt conveyor 6, the mixing bin 7, and the belt elevator 8. Not only is the system structure simple and easy to construct, but the feeding system of the smelting furnace is also constructed at a lower cost, ensuring that the technical solution of this patent is extremely practical.

[0032] Each raw material bin 2 and mixing bin 7 is provided with a vibrating machine 3. By controlling the vibrating machine 3, the discharge frequency of the raw material bin 2 and mixing bin 7 is controlled to ensure that the discharge process can be carried out uninterruptedly for 24 hours.

[0033] Anti-deviation switches are respectively provided on the raw material mixing belt conveyor 6 and the belt elevator 8. In this embodiment, a raw material mixing anti-right deviation switch 6-1 and a raw material mixing anti-left deviation switch 6-2 are provided on the raw material mixing belt conveyor 6, and an elevator anti-right deviation switch 8-1 and an elevator anti-right deviation switch 8-2 ​​are provided on the belt elevator 8. The operation status of the raw material mixing belt conveyor 6 and the belt elevator 8 is monitored in real time through the anti-deviation switches to ensure that the raw material mixing belt conveyor 6 and the belt elevator 8 can operate safely. At the same time, the safe operation of the belt conveyor is locked with the system operation to ensure the overall safe operation of the system.

[0034] The smelting furnace feed control method implemented based on the above-mentioned smelting furnace feed control system includes the following steps.

[0035] S1: Set the timed start time and start duration for the corresponding rapping machines 3 of the mixing bin 7 and each raw material bin 2, start the rapping machines 3 at a fixed time, and discharge the mixing bin 7 and the raw material bin 2; in this embodiment, the start time and start duration of the rapping machines 3 of the mixing bin 7 and the raw material bin 2 are respectively set to start for 10 seconds every 10 minutes. By setting the timed start time and start duration, it is ensured that the raw material bin can be fed uninterruptedly, thereby ensuring that the smelting furnace can work uninterruptedly.

[0036] S2: A blanking threshold is set for the belt scale 5 arranged below the raw material discharge port of each raw material bin 2; when the weight of the raw materials on each belt scale 5 reaches the blanking threshold, the belt scale 5 starts to blank the materials; by setting the blanking threshold, the ratio of each feed to the smelting furnace is controlled. During specific implementation, different blanking thresholds are set for each belt scale 5 according to different raw materials.

[0037] In the technical solution of this patent, when the ratio of a certain raw material is too different from that of other raw materials, the number of raw material bins is adjusted to ensure that the same frequency of material dropping of the bins can be met, and the material dropping threshold is set within the range of the belt scale 5. For example, if the proportion of dry sludge in the raw materials is heavy, the dry sludge bins 2-1 can be set to 2 or 3, so that the scheduled start time and start duration of the rapper 3 in each dry sludge bin 2-1 can be kept consistent with the frequency of the rapper 3 in other raw material bins. By setting the rapper 3, the belt scale 5, and adjusting the number of raw material plants 2, it is ensured that the technical solution of this patent is more practical.

[0038] S3: The raw material mixing belt conveyor 6 located below the discharge port of the belt scale 5 is set to a normally open state, and all the raw materials falling onto the raw material mixing belt conveyor 6 are sent into the mixing bin 7 in real time for mixing.

[0039] S4: The belt elevator 8 located below the mixing bin 7 is set to a normally open state, and all the raw materials falling onto the belt elevator 8 are sent to the top belt conveyor 9 of the smelting furnace in real time.

[0040] S5: The belt conveyor 9 on the top of the smelting furnace is set to a normally open state, and all the mixed raw materials falling on it are fed into the top feeding port of the smelting furnace in real time, thereby realizing an uninterrupted automatic feeding process of the smelting furnace.

[0041] The transfer belt conveyor 4 located between the raw material outlet of the raw material warehouse 2 and the belt scale 5 is set to a normally open state, and all raw materials falling on the transfer belt conveyor 4 are transferred to the belt scale 5 in real time, further ensuring that the smelting furnace can achieve uninterrupted automatic feeding.

[0042] During the implementation of steps S3 and S4, the operating status of the raw material mixing belt conveyor 6 and the belt elevator 8 is detected by the anti-deviation switch. Once any anti-deviation switch detects a deviation signal, the operation of the entire system is stopped; once the raw material mixing belt conveyor 6 and the belt elevator 8 deviate after running for a long time and the belt deviation switch is touched, the entire feeding system alarms and stops urgently, ensuring the safe operation of the system.

[0043] Before implementing step S1, the raw material bin 2 is loaded with materials via a mobile belt, and the inlet of the raw material bin 2 is monitored by an industrial camera 10, ensuring that the raw material bin can be replenished in real time while protecting the safety of the operator.

[0044] The technical solution of the present invention utilizes multiple belts to convey, weigh, and mix the raw materials of the smelting furnace, and accurately distributes the raw materials, thereby realizing automatic feeding, unmanned alarm emergency stop, and efficient incineration of the furnace.

Claims

1. A smelting furnace feeding system, characterized in that: It includes: Raw material silo, mixing silo, raw material mixing belt conveyor, smelting furnace top belt conveyor; The smelting furnace top belt conveyor is arranged at the top feed port of the smelting furnace; The raw material mixing belt conveyor is arranged below the raw material discharge port of the raw material bin; a belt scale is respectively arranged between the raw material bin and the raw material mixing belt conveyor and below the raw material outlet of each raw material bin; The mixing bin is provided below the mixed material discharge port of the raw material mixing belt conveyor, and a belt elevator is provided between the mixing bin and the top belt conveyor of the smelting furnace; It also includes a transfer belt conveyor, which is realized based on a short belt conveyor and is arranged between the raw material outlet of each raw material bin and the belt scale; Each of the raw material bin and the mixing bin is provided with a vibrating machine; The number of each type of raw material bin is greater than or equal to 1; The timing start time, start duration and frequency of the rappers in the raw material silos are kept consistent; when the ratio of a certain raw material is too different from that of other raw materials, the number of raw material silos is adjusted to ensure that the silos are discharged at the same frequency; By setting the scheduled start time and start duration, uninterrupted supply of raw materials to the raw material warehouse can be achieved.

2. The smelting furnace feeding system according to claim 1, characterized in that: Anti-deviation switches are respectively provided on the raw material mixing belt conveyor and the belt elevator.

3. The smelting furnace feeding system according to claim 1, characterized in that: It also includes a mobile belt conveyor for batching and an industrial camera. The mobile belt conveyor is arranged above the feeding port of the raw material warehouse; the shooting range of the industrial camera includes all the feeding ports of the raw material warehouse.

4. The smelting furnace feeding system according to claim 1, characterized in that: The raw material bin includes: a dry sludge bin, a quartz stone bin, a calcium carbonate bin and a carbon concentrate bin.

5. A method for controlling smelting furnace feed based on the smelting furnace feed control system according to claim 1, characterized in that: It includes the following steps: S1: setting a timed start time and start duration for the corresponding rapping machines of the mixing bin and each raw material bin, and starting the rapping machines at a fixed time to discharge the mixing bin and the raw material bin; S2: setting a material dropping threshold for a belt scale provided below a raw material discharge port of each raw material bin; when the weight of the raw material on each belt scale reaches the material dropping threshold, the belt scale is started to drop the material; S3: setting the raw material mixing belt conveyor located below the discharge port of the belt scale to a normally open state, and sending all the raw materials falling onto the raw material mixing belt conveyor into the mixing bin in real time for mixing; S4: The belt elevator located below the mixing bin is set to a normally open state, and all the raw materials falling onto the belt elevator are fed into the top belt conveyor of the smelting furnace in real time; S5: The belt conveyor on the top of the smelting furnace is set to a normally open state, and all the mixed raw materials falling on it are fed into the top feed port of the smelting furnace in real time; When the ratio of a certain raw material is too different from that of other raw materials, the number of raw material bins can be adjusted to meet the same frequency of material bin blanking; Keep the scheduled start time and start duration of the rapper in the newly added raw material bin consistent with the frequency of the rappers in other raw material bins; By setting the timing start time and start duration, uninterrupted feeding of raw material warehouse can be achieved; By controlling the vibrating machine, the discharge frequency of the raw material bin and the mixing bin can be controlled to ensure that the discharge process can be carried out uninterruptedly for 24 hours; The transfer belt conveyor located between the raw material outlet of the raw material warehouse and the belt scale is set to a normally open state, and all raw materials falling onto the transfer belt conveyor are transferred to the belt scale in real time.

6. A smelting furnace feed control method according to claim 5, characterized in that: During the implementation of steps S3 and S4, the operating status of the raw material mixing belt conveyor and the belt elevator is detected by the anti-deviation switch. Once any of the anti-deviation switches detects a deviation signal, the operation of the entire system is stopped.

7. A smelting furnace feed control method according to claim 5, characterized in that: Before implementing step S1, the raw material bin is loaded with materials via a movable belt, and the feeding port of the raw material bin is monitored by an industrial camera.

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