Distribution control system of submerged arc furnace

Abstract

The utility model provides a submerged arc furnace material distribution control system. The submerged arc furnace material distribution control system comprises a feeder, an infrared sensor, a programmable logic controller, man-machine interaction equipment, a hydraulic valve, a discharging trolley, a trolley rail and a plurality of furnace top bins. The furnace top bin is arranged on the submerged arc furnace cover, and the lower end of the furnace top bin is communicated with a material pipe extending into the submerged arc furnace; the vehicle rail is laid along a bin opening of the furnace top bin; an infrared sensor is arranged above the furnace top stock bin and is in signal connection with the programmable logic controller; a hopper of the discharging trolley is provided with a discharging door, the discharging door is connected with a hydraulic valve and is aligned with a bin opening of a furnace top bin, and the hydraulic valve is in signal connection with the programmable logic controller. And the man-machine interaction equipment is in signal connection with the programmable logic controller. Therefore, the furnace top stock bin to be charged is determined firstly, the infrared sensor is used for marking, the discharging trolley directly enters the furnace top stock bin for charging, and the recognition time is shortened. In addition, during discharging, a discharging door opening instruction is sent to the hydraulic valve at the same time, discharging is conducted when the discharging trolley reaches the furnace top stock bin, and the material distribution efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of charging of submerged arc furnaces, and in particular to a charging control system of submerged arc furnaces. Background Art

[0002] Submerged arc furnace, also known as electric arc furnace or electric resistance furnace, is mainly used for reducing and smelting ore. During the operation of the submerged arc furnace, raw materials need to be continuously added to the furnace to smelt the corresponding ore through the raw materials. There are multiple top silos on the top of the submerged arc furnace, and the lower end of the top silo is connected to a material pipe. When adding materials, the raw materials are first added to the top silo, and then the raw materials fall into the submerged arc furnace along the material pipe.

[0003] At present, most ore plants use the following feeding device to feed the ore furnace. The feeding device includes a track, an encoder, a feeding trolley, and a material level meter installed at the bottom of the feeding trolley. The track is set above the furnace top bunker of the ore furnace, and the encoder is installed on the wheel of the feeding trolley. When the ore furnace is working, the feeding trolley runs on the track. When the feeding trolley starts to run, the encoder starts to send pulses to the PLC to calculate the distance traveled by the feeding trolley, so as to determine the current position of the feeding trolley according to the distance traveled by the feeding trolley, so as to determine whether the feeding trolley is located above the furnace top bunker. Every time the feeding trolley runs above a furnace top bunker, the feeding trolley stays for a predetermined time to detect the amount of raw materials in the furnace top bunker. When the raw materials are less, the feeding trolley transports the raw materials in it to the furnace top bunker, and the furnace top bunker then discharges the materials into the ore furnace, completing the heating process of the ore furnace.

[0004] It can be seen from the above content that the prior art has at least the following technical problems: the encoder is used to determine the current position of the unloading trolley, and the encoder needs to send a pulse signal to the PLC. The PLC determines the position of the unloading trolley by counting the number of pulse signals, which involves a program. The program needs to be written by the staff and saved in the memory. The position of the unloading trolley is determined after running through the processor, which requires increased labor costs; in addition, the encoder is used to determine whether the unloading trolley has reached the top of the furnace top silo. When calculating the current position of the unloading trolley, it is calculated based on the interval time between the unloading trolleys. When the position of the front unloading trolley is calculated incorrectly, the positions of all the subsequent unloading trolleys will be calculated incorrectly, resulting in the unloading trolley being unable to accurately stay above the furnace top silo, and therefore unable to accurately lower the raw materials into the furnace top silo, but scattered on the vehicle track, resulting in low material distribution efficiency. Utility Model Content

[0005] The present application provides a submerged arc furnace charge distribution control system to solve the problems existing in the above-mentioned background technology.

[0006] The present application provides a submerged arc furnace material distribution control system, which includes: a feeder, an infrared sensor, a programmable logic controller, a human-computer interaction device, a hydraulic valve, a material unloading trolley, a trolley rail and a plurality of furnace top silos.

[0007] The plurality of furnace top material bins are arranged on the furnace cover of the submerged arc furnace, and the lower end of each of the furnace top material bins is connected to a material pipe, and the material pipe extends into the submerged arc furnace;

[0008] The rails are arranged above a plurality of furnace top silos and laid along the distribution direction of the silo openings of the furnace top silos, and the unloading trolley is provided with wheels matching the rails;

[0009] An infrared sensor is installed above each of the furnace top silos, and the infrared sensor is connected to the programmable logic controller signal;

[0010] The bucket of the unloading trolley is provided with a discharge door, and the discharge door is connected to the piston end of the hydraulic valve. When the unloading trolley stays above the furnace top silo, the discharge door can be aligned with the silo opening of the furnace top silo, and the hydraulic valve is connected to the programmable logic controller signal;

[0011] The human-computer interaction device is connected to the programmable logic controller by signal.

[0012] Optionally, a first material level meter is arranged above each of the furnace top silos, and the first material level meter is connected to the programmable logic controller by signal.

[0013] Optionally, a second material level meter is disposed above the feeder, and the second material level meter is signal-connected to the programmable logic controller.

[0014] Optionally, a third material level meter is provided above the unloading trolley, and the third material level meter is connected to the programmable logic controller signal.

[0015] Optionally, the ore-bearing furnace material distribution system further includes a belt conveyor, and the height of the belt conveyor is located between the feeder and the unloading trolley.

[0016] Optionally, the feeder comprises a plurality of feeders, and the plurality of feeders are arranged above the belt conveyor.

[0017] Optionally, the feeder is a vibrating feeder.

[0018] The electric arc furnace charging control system provided in the embodiment of the present application includes a charging trolley, a track, an infrared sensor and multiple furnace top silos. An infrared sensor is arranged above each furnace top silo to sense whether a charging trolley has arrived above the furnace top silo. When in use, the infrared sensors corresponding to the furnace top silos that do not need charging are turned off, and only the infrared sensors corresponding to the furnace top silos that need charging are kept turned on. When the infrared sensor detects the arrival of the charging trolley, the charging trolley is controlled to stop running through the PLC, and then the charge is transported from the charging trolley to the furnace top silo to complete one charging operation. As for the prior art, the current position of the material unloading trolley is determined by an encoder, and the encoder needs to send a pulse signal to the PLC. The PLC determines the position of the material unloading trolley by counting the number of pulse signals, which involves a program that needs to be written by the staff and saved in the memory. The position of the material unloading trolley is determined after running through the processor, which requires increased labor costs; in addition, the encoder is used to determine whether the material unloading trolley has reached the top of the furnace top silo. When the current position of the material unloading trolley is calculated, it is calculated based on the interval time between the material unloading trolleys. When the position of the front material unloading trolley is calculated incorrectly, the positions of all the subsequent material unloading trolleys will be calculated incorrectly, resulting in the material unloading trolley being unable to accurately stay above the furnace top silo, and therefore unable to accurately lower the raw materials into the furnace top silo, but scattered on the vehicle track, resulting in low material distribution efficiency. Therefore, compared with the prior art, the present application determines in advance the furnace top silo that needs to be charged, and marks the furnace top silo that needs to be charged by keeping the infrared sensor in an open state, and turns off other infrared sensors. Therefore, the methods for determining the positions of each furnace top silo are independent of each other and are not affected by each other, so that the unloading trolley can accurately and directly reach the furnace top silo that needs to be charged, reducing the time required to identify the furnace top silo to be charged, improving the accuracy of unloading, and thus improving the efficiency of material distribution; at the same time, there is no need to write programs, reducing labor costs.

[0019] In addition, when it is necessary to unload materials into a certain furnace top silo, a command to open the material door is sent to the corresponding hydraulic valve at the same time, so that the unloading trolley can unload materials as soon as it reaches the furnace top silo, further improving the efficiency of material distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the main structure of a submerged arc furnace charging control system provided in one embodiment of the present application;

[0022] Figure 2 A logical connection diagram of a submerged arc furnace charge distribution control system provided in yet another embodiment of the present application;

[0023] Figure 3 A schematic diagram of the main structure of a submerged arc furnace charge distribution control system provided in one embodiment of the present application;

[0024] Figure 4 A schematic diagram of the top structure of a furnace top silo and a rail provided in one embodiment of the present application.

[0025] In the figure: feeder 10; infrared sensor 11; programmable logic controller 12; human-machine interaction device 13; hydraulic valve 14; unloading trolley 15; track 16; first material level meter 17; furnace top silo 18; second material level meter 19; material pipe 20; third material level meter 21; belt conveyor 22. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also belong to the scope of protection of the present application. In addition, it should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in the absence of conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] Figure 1 This is a submerged arc furnace distribution control system according to an embodiment of the present application. Figure 1 As shown, combined with Figure 2 and Figure 4 The material distribution control system of the ore-fired furnace includes: a feeder 10, an infrared sensor 11, a programmable logic controller 12, a human-computer interaction device 13, a hydraulic valve 14, a material unloading trolley 15, a trolley track 16 and a plurality of furnace top silos 18.

[0028] The plurality of furnace top material bins 18 are arranged on the furnace cover of the submerged arc furnace, and the lower end of each of the furnace top material bins 18 is connected to a material pipe 20, and the material pipe 20 extends into the submerged arc furnace;

[0029] The rails 16 are arranged above a plurality of furnace top silos 18 and are laid along the distribution direction of the silo openings of the furnace top silos 18. The unloading trolley 15 is provided with wheels matching the rails 16.

[0030] An infrared sensor 11 is installed above each of the furnace top silos 18, and the infrared sensor 11 is connected to the programmable logic controller 12 by signal;

[0031] The bucket of the unloading trolley 15 is provided with a discharge door, and the discharge door is connected to the piston end of the hydraulic valve 14. When the unloading trolley 15 stays above the furnace top silo 18, the discharge door can be aligned with the silo opening of the furnace top silo 18. The hydraulic valve 14 is connected to the programmable logic controller 12 by signal;

[0032] The human-computer interaction device 13 is connected to the programmable logic controller 12 by signals.

[0033] The infrared sensor 11 can be installed on the rail 16 above the furnace top silo 18, further, can be installed in the groove of the rail 16, or can be installed on the lower surface of the rail 16. Of course, the infrared sensor 11 can also be installed on the upper end of the furnace top silo 18, as long as it can sense whether the unloading trolley 15 has arrived and does not affect unloading into the ore furnace.

[0034] Further, see Figure 4 The structure of the track 16 is coordinated with the structure of the wheel of the unloading trolley 15. For example, if the unloading trolley 15 has inner and outer double rows of wheels, the track 16 is an inner and outer double track.

[0035] The human-machine interaction device 13 can be arranged in the monitoring room. The human-machine interaction device 13 is a human-machine interface (English full name: Human Machine Interface English abbreviation: HMI) product, including a processor, a display unit, an input unit, a communication interface, a data storage device, etc., among which the processor is the core unit of the human-machine interaction device 13.

[0036] Among them, the input unit is used for the operator to input data into the processor, and the communication interface is used for data communication between the human-computer interaction device 13 and the PLC12. The communication interface can be a network cable interface such as RS232, RS485, RJ45, etc. For other components of the human-computer interaction device 13, please refer to the relevant content and will not be described in detail here.

[0037] Exemplarily, the human-computer interaction device 13 can be a combination of a computer and a touch screen, and the touch screen is used for the operator to input information into the computer, such as the number of furnace top silos 18, the identification of the furnace top silos 18, the identification of each infrared sensor 11, etc. The computer then sends the input information to PLC12, so that PLC12 performs further operations based on the input information.

[0038] The programmable logic controller 12 (full name: Programmable Logic Controller, English abbreviation: PLC) is essentially a computer dedicated to industrial control, and its hardware structure is basically the same as that of a microcomputer, including a power supply, a central processing unit, a memory, an input unit, and an output unit. The PLC 12 can be set up in a production workshop or a monitoring room, and is used to receive data sent by the human-computer interaction device 13, such as the number of furnace top silos 18, the identification code of the furnace top silos 18, the identification of each infrared sensor 11, etc.

[0039] The unloading trolley 15 is used to add materials to the furnace top silo 18. When it is found that the charge near a certain electrode is less than a predetermined amount, charge is added to the vicinity of the electrode through the furnace top silo 18 corresponding to the electrode.

[0040] The rails 16 are used to support the unloading trolley 15 . The unloading trolley 15 can run on the rails 16 through wheels and can stay above any designated furnace top silo 18 according to received instructions.

[0041] Therefore, the overall direction of the rail 16 is related to the distribution position of the furnace top silo 18. For example, if the distribution of the furnace top silo 18 is circular, the overall direction of the rail 16 is also circular.

[0042] The feeder 10 is used to transport raw materials to the lower feed trolley 15 .

[0043] In addition, it should be noted that each device of the feeder 10, the infrared sensor 11, the programmable logic controller 12, the human-computer interaction device 13, and the unloading trolley 15 is provided with a communication module, and the communication module is provided with a communication interface, and the communication interface is used for data transmission between each device. For example, the infrared sensor 11 sends an arrival signal to the PLC 12 through the communication interface thereon, indicating that the unloading trolley 15 has arrived above it. Furthermore, the communication interface can be RS232, RS485, etc.

[0044] Optionally, the correspondence between the electrode identification, the furnace top silo 18 identification, and the infrared sensor 11 identification is stored in the PLC 12 in advance. Exemplarily, the correspondence is as follows:

[0045]

[0046] The working process of the above-mentioned submerged arc furnace charging control system is as follows:

[0047] Inputting the identification of each infrared sensor 11 to the PLC 12 through the human-computer interaction device 13;

[0048] When the ore-fired furnace is working, the staff observes the charge situation around each electrode in the ore-fired furnace in real time through the furnace door of the ore-fired furnace. When the charge is large, no charge may be added. At this time, the unloading trolley 15 stays at a predetermined position of the track 16, for example, at a position where the feeder 10 can unload the charge to the unloading trolley 15;

[0049] When the charge is less, it is determined to add charge to the furnace top silo 18 corresponding to the electrode with less charge, and the corresponding infrared sensor 11 is determined according to the determined furnace top silo 18;

[0050] Alternatively, if the corresponding relationship between the electrode identification, the furnace top material bin 18 identification, and the infrared sensor 11 identification is stored in the PLC 12 in advance, when it is found that there is a shortage of material at the electrode, the infrared sensor 11 corresponding to the electrode can be directly determined;

[0051] The infrared sensors 11 corresponding to other electrodes that are not short of material are turned off, and the infrared sensors 11 corresponding to the electrodes that are short of material remain turned on. The number of infrared sensors 11 that remain turned on may be 0, 1, or more;

[0052] When there is an infrared sensor 11 that remains in an on state, the operator sends a start instruction for the motor driver of the material unloading trolley 15 to the PLC 12 through the human-computer interaction device 13; after receiving the start instruction, the PLC 12 sends the start instruction to the motor driver of the material unloading trolley 15, and the motor driver of the material unloading trolley 15 starts to work, and the material unloading trolley 15 starts to run; the drive instruction can be automatically generated, for example, when the PLC 12 detects the presence of the infrared sensor 11 that remains in an on state, it automatically generates a start instruction for the motor driver of the material unloading trolley 15; it should be noted here that the prior art requires manual start of the material unloading trolley 15, that is, when the material unloading trolley 15 stops working and needs to be started again, it is necessary to manually send a start instruction to the PLC 12 through the human-computer interaction device 13;

[0053] When the unloading trolley 15 runs to the position where the first infrared sensor 11 that remains in the open state is located, when the infrared sensor 11 detects the infrared signal emitted by the unloading trolley 15, it is determined that the unloading trolley 15 has reached the position where the infrared sensor 11 that remains in the open state is located;

[0054] The infrared sensor 11 sends an arrival signal to the PLC 12 that the unloading trolley 15 has reached the top of the furnace top silo 18 corresponding to the electrode lacking material;

[0055] When the PLC 12 receives the arrival signal, it sends a pause command to the motor driver of the feeding trolley 15 and sends an opening command to the hydraulic valve 14 to open the feeding door;

[0056] After receiving the pause command, the motor driver of the unloading trolley 15 stops working, and the unloading trolley 15 stops running; at this time, the hydraulic valve 14 works, and the unloading door is opened by the piston;

[0057] The charge falls from the unloading trolley 15 and enters the furnace top silo 18, completing one unloading;

[0058] After the unloading is completed, the unloading trolley 15 moves to the bottom of the feeder 10 again to load the material in preparation for the next feeding;

[0059] When there is still an infrared sensor 11 that remains in the turned-on state, the submerged arc furnace charge distribution control system repeats the above process to distribute charge to ensure that the charge in the submerged arc furnace can be supplied long-term and sufficiently.

[0060] In the above process, if the material level in the feeder 10 is low, it is necessary to add raw materials into the feeder 10 in time to ensure that the feeder 10 can add raw materials into the lower feed trolley 15 at any time.

[0061] In the above process, if the material level in the material unloading trolley 15 is low, it is necessary to add raw materials to the material unloading trolley 15 in time to ensure that the material unloading trolley 15 can add raw materials to the furnace top silo 18 at any time.

[0062] Further, the unloading trolley 15 is provided with a motor driver for driving the unloading trolley 15 to run, and the motor driver is connected to the PLC 12 signal so that the PLC 12 can well control the start or pause of the unloading trolley 15. Further, for the process of how the PLC 12 controls the start or pause of the feeder 10 and the unloading trolley 15, refer to the relevant content, which will not be repeated here.

[0063] In addition, for more specific structures and working principles of the feeder 10, the programmable logic controller 12, and the human-computer interaction device 13, please refer to the relevant content and will not be elaborated here.

[0064] The electric arc furnace charging control system provided in the embodiment of the present application includes a charging trolley 15, a track 16, an infrared sensor 11 and a plurality of furnace top silos 18. An infrared sensor 11 is arranged above each furnace top silo 18 to sense whether a charging trolley 15 has arrived above the furnace top silo 18. When in use, the infrared sensors 11 corresponding to the furnace top silos 18 that do not need charging are turned off, and only the infrared sensors 11 corresponding to the furnace top silos 18 that need charging are kept turned on. When the infrared sensor 11 detects the arrival of the charging trolley 15, the charging trolley 15 is controlled to stop running through the PLC 12, and then the charge is transported from the charging trolley 15 to the furnace top silo 18 to complete one charging operation. As for the prior art, the current position of the material unloading trolley is determined by an encoder, and the encoder needs to send a pulse signal to the PLC. The PLC determines the position of the material unloading trolley by counting the number of pulse signals, which involves a program that needs to be written by the staff and saved in the memory. The position of the material unloading trolley is determined after running through the processor, which requires increased labor costs; in addition, the encoder is used to determine whether the material unloading trolley has reached the top of the furnace top silo. When the current position of the material unloading trolley is calculated, it is calculated based on the interval time between the material unloading trolleys. When the position of the front material unloading trolley is calculated incorrectly, the positions of all the subsequent material unloading trolleys will be calculated incorrectly, resulting in the material unloading trolley being unable to accurately stay above the furnace top silo, and therefore unable to accurately lower the raw materials into the furnace top silo, but scattered on the vehicle track, resulting in low material distribution efficiency.

[0065] Therefore, compared with the prior art, the present application determines in advance the furnace top silo 18 that needs to be charged, and marks the furnace top silo 18 that needs to be charged by keeping the infrared sensor 11 in an open state, and turns off other infrared sensors 11. Therefore, the methods for determining the positions of each furnace top silo 18 are independent of each other and are not affected by each other, so that the unloading trolley 15 can accurately and directly reach the furnace top silo 18 that needs to be charged and complete the charging, thereby reducing the time required to identify the furnace top silo 18 to be charged, improving the accuracy of unloading, and thus improving the distribution efficiency; at the same time, there is no need to write programs, reducing labor costs.

[0066] In addition, when it is necessary to discharge materials into a certain furnace top silo 18, a command to open the discharge door is simultaneously sent to the corresponding hydraulic valve 14, so that the discharge trolley 15 can discharge materials as soon as it reaches the furnace top silo 18, further improving the efficiency of material distribution.

[0067] In addition, the prior art determines the current position of the unloading trolley 15 through an encoder, but the cost of the encoder is high. The present application can omit the encoder and reduce the cost of fabric.

[0068] In addition, the prior art requires the unloading trolley 15 to run on the track 16 all the time to detect whether there is a shortage of material in the furnace top silo 18, while the present application does not require it to run all the time. It only runs when the furnace top silo 18 is short of material, which can also save the energy required for the operation of the unloading trolley 15.

[0069] Optionally, the discharge door of the unloading trolley 15 can be set on the lower bottom surface of the trolley, or on the side of the trolley, as long as it is ensured that the discharge door can smoothly lower the furnace charge into the furnace top silo 18.

[0070] Alternatively, see Figure 3 A first material level meter 17 is disposed above each of the furnace top silos 18 , and the first material level meter 17 is signal-connected to the programmable logic controller 12 .

[0071] The first material level meter 17 may be located directly above the opening of the furnace top silo 18 or may be located obliquely above it. The embodiment of the present application does not impose any limitation on this, as long as the first material level meter 17 can detect the material level of the furnace top silo 18 .

[0072] When there is a shortage of material around a certain electrode in the electric arc furnace, the material level of the furnace top silo 18 corresponding to the electrode is also low. Therefore, a first material level meter 17 can be installed above the furnace top silo 18 to detect the material level in the furnace top silo 18.

[0073] Furthermore, the identification of each first material level meter 17 is input to the PLC 12 through the human-computer interaction device 13, and a corresponding relationship between the identification of the first material level meter 17, the identification of the furnace top silo 18, and the identification of the infrared sensor 11 is established.

[0074] During operation, the first material level meter 17 in each furnace top material bin 18 detects the material level high and low values ​​of the furnace top material bin 18 in real time, and sends the detected material level high and low values ​​to the PLC 12;

[0075] PLC12 compares each material level value with a predetermined material level value. When the material level value is greater than or equal to the predetermined material level value, it is determined that the furnace top material bin 18 is not short of material. When the material level value is less than the predetermined material level value, it is determined that the furnace top material bin 18 is short of material.

[0076] When the PLC 12 receives feedback from the first level meter 17 that the material level of a furnace top silo 18 is less than a predetermined material level value, it sends an operation instruction to the motor driver of the unloading trolley 15 so that the unloading trolley 15 adds material to the furnace top silo 18 that is short of material.

[0077] The present application will install a first material level meter 17 for each furnace top material bin 18 to monitor the material level of the furnace top material bin 18 in real time and send it to PLC12, without the need for manual observation of the amount of furnace charge around the electrode in the ore arc furnace. In addition, in the prior art, the material level meter is arranged on the material unloading trolley 15. Only when the material unloading trolley 15 reaches above the furnace top silo 18 can the material level detection operation of the furnace top silo 18 be performed. Therefore, in order to know the material level of a furnace top silo 18, it is necessary to wait for the time for it to arrive at the furnace top silo 18 and the time required to perform the detection operation; and the present application sets a first material level meter 17 for each furnace top silo 18. Therefore, the first material level meter 17 can detect the material level of each furnace top silo 18 at all times, that is, the material level in the furnace top silo 18 is known at any time, and there is no need to wait for the material unloading trolley 15 to arrive before detection. Therefore, the time required for the material unloading trolley 15 to travel to the furnace top silo 18 is saved, and the time required to wait for the detection operation to be performed is also saved, thereby improving the material distribution efficiency.

[0078] Optionally, the first material level meter 17 is a radar material level meter or an infrared material level meter.

[0079] Alternatively, see Figure 3 A second material level meter 19 is disposed above the feeder 10 , and the second material level meter 19 is signal-connected to the programmable logic controller 12 .

[0080] The second material level meter 19 is used to detect the material level of the feeder 10. The second material level meter 19 can be set directly above the feeder 10, or can be set obliquely above the feeder 10. The embodiment of the present application does not limit this, as long as the second material level meter 19 can detect the material level of the feeder 10.

[0081] Optionally, the second material level meter 19 is a radar material level meter or an infrared material level meter.

[0082] Alternatively, see Figure 3 A third material level meter 21 is disposed above the unloading trolley 15 , and the third material level meter 21 is signal-connected to the programmable logic controller 12 .

[0083] The third material level meter 21 is used to detect the height of the material level in the compartment of the material unloading trolley 15. The third material level meter 21 can be set directly above the material unloading trolley 15, or can be set obliquely above the material unloading trolley 15, or can be set at a position where it can detect the material level of the material unloading trolley 15. The embodiment of the present application does not limit this, as long as the third material level meter 21 can detect the height of the material level in the compartment of the material unloading trolley 15, for example, the third material level meter 21 can also be set at the upper end of the inner side wall of the bucket of the material unloading trolley 15.

[0084] Optionally, the third material level meter 21 is a radar material level meter or an infrared material level meter.

[0085] Generally, the feeder 10 can be arranged at a position higher than the unloading trolley 15 by means of a support frame or other equipment for raising the feeder 10. When the unloading trolley 15 needs to be fed, it can stay below the discharge port of the feeder 10.

[0086] Of course, the feeder 10 can also be arranged at other positions, and the raw materials can be transported to the unloading trolley 15 through the belt conveyor 22.

[0087] Alternatively, see Figure 3 The ore-fired furnace material distribution system further includes a belt conveyor 22 , and the height of the belt conveyor 22 is located between the feeder 10 and the unloading trolley 15 .

[0088] When the distance between the feeder 10 and the material unloading trolley 15 is far, the feeder 10 cannot directly convey the furnace charge to the material unloading trolley 15. Therefore, after the belt conveyor 22 is added, the feeder 10 can first convey the raw material to the belt conveyor 22, and then the belt conveyor 22 conveys the raw material to the material unloading trolley 15. The spatial position restriction of the feeder 10 and the material unloading trolley 15 is reduced.

[0089] Figure 3 In the figure, the position of the feeder 10 is set higher than the unloading trolley 15 but far away from the track 16. Of course, the position of the feeder 10 can also be set at a position lower than the unloading trolley 15 according to actual conditions, as long as the material at the discharge port of the feeder 10 can be transported to the unloading trolley 15 by the belt conveyor 22.

[0090] Alternatively, see Figure 3 The feeder 10 includes multiple feeders 10, and the multiple feeders 10 are arranged above the belt conveyor 22.

[0091] The discharge port of each feeder 10 is aligned with the upper surface of the belt conveyor 22 so that the output material of the feeder 10 can fall onto the belt conveyor 22 .

[0092] When the charge added to the ore-bearing furnace is a mixture of multiple raw materials, each feeder 10 can add different raw materials, which are then transported to the belt conveyor 22 through the feeder 10. The belt conveyor 22 transports the multiple raw materials to the unloading trolley 15, so that multiple raw materials can be mixed and then transported to the ore-bearing furnace.

[0093] Optionally, the feeder 10 is a vibrating feeder.

[0094] Optionally, a support structure is provided between the furnace top silo 18 and the rail 16 for supporting the rail 16 .

[0095] Furthermore, the supporting structure may be a connecting rod fixedly connected between the furnace top silo 18 and the vehicle rail 16 .

[0096] In addition, it should be noted that the feeder 10, belt conveyor 22, and unloading trolley 15 are directly connected to the PLC12 in the figure for the convenience of illustration. In fact, the respective drivers of the feeder 10, belt conveyor 22, and unloading trolley 15 are connected to the PLC12.

[0097] Finally, it should be noted that all contents not described in the technical solution of this application can be implemented using existing technologies. In addition, the above embodiments are only used to illustrate the technical solution of this application, rather than to limit it; although the application is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A submerged arc furnace charging control system, characterized in that: include: Feeder, infrared sensor, programmable logic controller, human-machine interaction equipment, hydraulic valve, unloading trolley, rails and multiple furnace top silos; The plurality of furnace top material bins are arranged on the furnace cover of the submerged arc furnace, and the lower end of each of the furnace top material bins is connected to a material pipe, and the material pipe extends into the submerged arc furnace; The rails are arranged above a plurality of furnace top silos and laid along the distribution direction of the silo openings of the furnace top silos, and the unloading trolley is provided with wheels matching the rails; An infrared sensor is installed above each of the furnace top silos, and the infrared sensor is connected to the programmable logic controller signal; The bucket of the unloading trolley is provided with a discharge door, and the discharge door is connected to the piston end of the hydraulic valve. When the unloading trolley stays above the furnace top silo, the discharge door can be aligned with the silo opening of the furnace top silo, and the hydraulic valve is connected to the programmable logic controller signal; The human-computer interaction device is connected to the programmable logic controller by signal.

2. The submerged arc furnace charge distribution control system according to claim 1, characterized in that: A first material level meter is arranged above each of the furnace top material bins, and the first material level meter is connected to the programmable logic controller by signal.

3. The submerged arc furnace charge distribution control system according to claim 2, characterized in that: A second material level meter is arranged above the feeder, and the second material level meter is connected to the programmable logic controller by signal.

4. The submerged arc furnace charge distribution control system according to claim 3, characterized in that: A third material level meter is arranged above the unloading trolley, and the third material level meter is connected to the programmable logic controller by signal.

5. The submerged arc furnace charge distribution control system according to claim 1, characterized in that: The ore-generating furnace material distribution system further comprises a belt conveyor, the height of which is located between the feeder and the material unloading trolley.

6. The submerged arc furnace charge distribution control system according to claim 5, characterized in that: The feeder comprises a plurality of feeders, and the plurality of feeders are arranged above the belt conveyor.

7. The submerged arc furnace charge distribution control system according to any one of claims 1 to 6, characterized in that: The feeder is a vibrating feeder.

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