Automatic loading system for pit material

Abstract

The utility model relates to the field of converter feeding, a ground bunker material automatic feeding system, including with PLC electric signal connection's underground bunker (1), high position bunker, feeding belt (4), transfer station (5), belt conveyor unloading trolley (7), the feeding belt (4) includes 2-4 conveying belts, and is connected through a transfer station (5) between every conveying belt, and the transfer station (5) connected with the first conveying belt is installed with belt scale, the underground bunker (1) includes a plurality of first storage bunker in a straight line arrangement, and every first storage bunker all discharges through the rattle motor (3) installed at its discharge gate, and the discharge gate of every first storage bunker is just above the first conveying belt, the high position bunker includes a plurality, and every high position bunker includes a plurality of second storage bunker, and every second storage bunker is installed with material level meter (8).

Description

Technical Field

[0001] This utility model relates to the field of converter charging. Background Technology

[0002] The converter charging process requires the use of belt conveyors to transport auxiliary raw materials and ferroalloys from the underground silo to the high-level auxiliary raw material silo. To prevent mixing of materials in the silos, it is necessary to check on-site whether the material types in the underground silo and the silo to be charged are consistent before deciding to start charging. On-site charging is carried out in a basically fully manual manner, and the material type and location of the high-level silo to be charged are manually checked and confirmed. In fast-paced, multi-steel smelting, charging is frequent, and manual operation can easily lead to incorrect material charging or mixing of materials.

[0003] As steel mills increase their product range, the selection and types of materials become more diverse. Different steel grades have different material requirements, and different steel grades may be produced on the same day. As a result, the frequency of material loading operations by workers increases, which may lead to an increased error rate. The occurrence of materials being loaded into the wrong bin or mixed materials affects the smelting rhythm and the hit rate of steel grades. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to avoid the situation of feeding the wrong hopper or mixing materials in the converter feeding process.

[0005] The technical solution adopted by this utility model is: an automatic material feeding system for underground warehouses, including an underground silo (1), a high-level silo, a feeding belt (4), a transfer station (5), and a belt conveyor unloading trolley (7) connected to a PLC electrical signal. The feeding belt (4) includes 2-4 conveyor belts, and each conveyor belt is connected to a transfer station (5). A belt scale is installed on the transfer station (5) connected to the first conveyor belt. The underground silo (1) includes multiple first storage silos arranged in a straight line. Each first storage silo discharges material through a vibrating motor (3) installed at its outlet. The outlet of each first storage silo is located directly above the first conveyor belt. The high-level silo includes multiple second storage silos, and each second storage silo is equipped with a level gauge (8).

[0006] Each vibrating motor (3) and level gauge (8) is electrically connected to the PLC.

[0007] Each of the first storage silos includes one or more first lime storage silos, one or more first sludge ball storage silos, one or more first magnetic powder storage silos, one or more first light-burned dolomite storage silos, one or more first high-calcium ash storage silos, and one or more first raw dolomite storage silos. Each high-level silo includes one or more second lime storage silos, one or more second sludge ball storage silos, one or more second magnetic powder storage silos, one or more second light-burned dolomite storage silos, one or more second high-calcium ash storage silos, and one or more second raw dolomite storage silos.

[0008] Each first storage bin is equipped with a material selection input device, and each second storage bin is equipped with a material selection input device.

[0009] Each first storage bin is equipped with a display device for displaying the material name, material storage quantity, and status information, and each second storage bin is equipped with a display device for displaying the material name, material storage quantity, and status information.

[0010] Each of the first and second storage bins is equipped with a programmable memory, an input keyboard, and a display. The PLC, input keyboard, and display are all electrically connected to the programmable memory.

[0011] The beneficial effects of this utility model are: this utility model can realize automatic feeding, and each first storage bin and second storage bin can transmit the material name, material quantity and its own status to the PLC. Then, the PLC can directly obtain the status and feeding status of each first storage bin and second storage bin, and the material will not be fed into the wrong bin or mixed up. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a PLC control display diagram of this utility model.

[0014] 1. Underground silo, 2. First storage silo, 3. Vibrating motor, 4. Feeding belt, 5. Transfer station, 6. First high-level silo, 7. Belt conveyor unloading trolley, 8. Level gauge, 9. Second high-level silo, 10. Second storage silo. Detailed Implementation

[0015] like Figure 1 As shown, an automatic material feeding system for an underground warehouse includes an underground silo 1, an elevated silo, a feeding belt 4, a transfer station 5, and a belt conveyor unloading trolley 7, all connected to a PLC by electrical signals.

[0016] The underground silo 1 is existing technology and is used to store materials (metallurgical auxiliary materials and ferroalloys). To prevent water accumulation from affecting the storage of materials and the stability of equipment operation, the underground silo needs to be equipped with a drainage system and integrated with a water level monitoring device.

[0017] The underground silo 1 of this utility model is an improvement on the existing one, including a plurality of first storage silos 2 arranged in a straight line. In one embodiment, there are 10 first storage silos 2. Each first storage silo 2 is used to store a kind of material. Each first storage silo 2 discharges material through a vibrating motor 3 installed at its discharge port. The discharge port of each first storage silo 2 is located directly above the first conveyor belt. When discharging material from each first storage silo 2, the material is loaded onto the first conveyor belt.

[0018] The difference between the underground silo 1 of this utility model and the prior art is that each of the first storage silos 2 of this utility model is equipped with an editable memory, an input keyboard, and a display. The name of the material stored in each first storage silo 2 is input through the keyboard and displayed on the display. The editable memory can be any existing type, and the one with the most favorable price can be selected. The display is an industrial small display (existing technology). The editable memory transmits the input material name to the PLC. The vibrating motor 3 is connected to the editable memory. Each editable memory is numbered, and then each first storage silo 2 is controlled by the PLC.

[0019] High-level silos, also existing technology, are used for temporary storage of bulk materials such as coke, lime, and dolomite to ensure a continuous supply of raw materials during converter smelting, typically requiring a 24-hour reserve. Each secondary storage silo 10 of the high-level silo is usually positioned high (usually above the converter) to automatically transport raw materials into the furnace using gravity, reducing energy consumption from secondary handling. Each secondary storage silo 10 typically includes a silo body, a weighing hopper, a collection hopper, and a chute, and is mostly located in the elevated plant building across the converter span. This invention is a shared silo, where multiple converters share a single silo, reducing the number of devices required. It employs a linkage control system between an electronic scale (built-in) and a level detector (level gauge) to automatically replenish materials from the underground silo when the high-level silo is low.

[0020] The difference between the high-level silo of this utility model and the prior art is that each of the second storage silos 10 of this utility model is equipped with an editable memory, an input keyboard, and a display. The name of the material stored in each second storage silo 10 is input through the keyboard and displayed on the display. The editable memory can be any existing type, and the one with the most favorable price can be selected. The display is an industrial small display (existing technology). The editable memory transmits the input material name to the PLC, assigns a number to each editable memory, and then controls each second storage silo 10 through the PLC.

[0021] The vibrating motor 3 is existing technology, typically a 2-pole vibrating motor (3000 rpm), directly installed at the bottom of the hopper. It prevents material accumulation or clumping through high-frequency vibration, and is suitable for uniform feeding of loose materials such as coke and lime. In one embodiment, the vibrating motor 3 is a GZG series vibrating feeder.

[0022] The feeding belt 4 is a prior art. The feeding belt 4 of this utility model includes 2-4 conveyor belts. Each conveyor belt can operate independently. Each conveyor belt is connected to the others through a transfer station 5. The feeding belt 4 and the transfer station 5 complete the material conveying and weighing.

[0023] Transfer station 5, existing technology, serves as a key node in the material conveying system, undertaking multi-directional transfer (e.g., connections between belt conveyors and elevators), temporary buffer storage, and process switching (e.g., material distribution and mixing). Commonly found in mining, metallurgy, and port settings, it connects crushing, screening, and storage processes, ensuring continuous logistics. The main structure includes a receiving bin, a guide chute, and a distributor. The receiving bin is lined with wear-resistant plates (such as high-manganese steel or ceramic composite materials) to withstand the impact of large materials. The guide chute and distributor control the material distribution direction via hydraulic or pneumatic devices, adapting to multiple process path switching. A belt scale is installed on transfer station 5, which connects to the first conveyor belt (i.e., the conveyor belt receiving materials from the first storage bin 2).

[0024] The belt conveyor unloading trolley 7 is an existing technology that supports single-sided, double-sided, or intermediate unloading. Material flow is controlled by the chute inclination angle (≥60°) and gate valves to adapt to the diversion needs of bulk materials such as ore, coal, and grain. Moving along the conveyor track, it can unload at any position in the horizontal section, achieving efficient material distribution in the stockpile, with a processing capacity of several thousand tons per hour. It mainly includes a frame and drive unit: a motor-driven wheel assembly moves along a light rail (belt speed ≤2.5m / s) to ensure operational stability; a single-sided chute is suitable for sticky and wet materials (such as fine ore), while a double-sided chute improves distribution efficiency through a three-way diversion; the receiving hopper uses wear-resistant materials (such as high-manganese steel) to withstand the impact of large materials. Through structural optimization and intelligent control, the belt conveyor unloading trolley significantly improves the efficiency of bulk material transfer. Its selection requires comprehensive consideration of material characteristics, operating conditions, and maintenance costs to achieve a balance between economy and reliability.

[0025] In one embodiment, the high-level silo includes multiple high-level silos, each of which includes multiple second storage silos, and each second storage silo is equipped with a level gauge.

[0026] Each of the first storage silos includes one or more first lime storage silos, one or more first sludge ball storage silos, one or more first magnetic powder storage silos, one or more first light-burned dolomite storage silos, one or more first high-calcium ash storage silos, and one or more first raw dolomite storage silos. Each high-level silo includes one or more second lime storage silos, one or more second sludge ball storage silos, one or more second magnetic powder storage silos, one or more second light-burned dolomite storage silos, one or more second high-calcium ash storage silos, and one or more second raw dolomite storage silos.

[0027] like Figure 2 The automatic feeding operation process is shown below (using 4 conveyor belts and 2 converters as an example):

[0028] Switch the feeding mode to automatic mode. At this time, the automatic mode button turns green. Simultaneously, the unloading trolley of the belt conveyor, conveyor belts 1-4, and vibrating feeders 1-10 of the first storage bin will automatically switch to "centralized automatic" mode.

[0029] Set the loading interlock weight and confirm whether the material type to be loaded exists in the underground silo (① the flux bottom silo and the high-level silo have the same material type; ② when multiple silos in the bottom silo have the same material type, you need to click the priority button below the underground silo you want to load).

[0030] After confirmation, click on the high-level hopper where you need to load materials.

[0031] Confirm that the bin number and material type (material name) of the high-level bin to be loaded are consistent with those of the underground bin. Once confirmed, the automatic loading process for the current bin will begin. During the automatic loading process, other high-level bins cannot be selected. If not confirmed, you can select again.

[0032] The conveyor belts are started sequentially from 4 to 3 to 2 to 1 (note the 30-second interval between starting the #2 and #1 conveyor belts).

[0033] The belt conveyor unloading trolley starts automatically and moves to the designated high-level hopper position before stopping.

[0034] The corresponding underground silo vibrating motor starts automatically.

[0035] When the material reaches the set height of the high-level hopper or the set weight of the feed, the vibrating motor will automatically stop vibrating.

[0036] After the vibrating motor stops vibrating, the material on the conveyor belt will continue to be fed to the current high-level hopper. After 6 minutes, all high-level hoppers can be selected again. At this time, you can choose to automatically feed other high-level hoppers.

[0037] After automatic feeding ends, if no other high-level hopper is selected for automatic feeding within 10 minutes, the conveyor belt will automatically stop in sequence 1-2-3-4.

[0038] like Figure 2 As shown, the PLC operation screen displays dynamic prompts and functions:

[0039] (1) Automatic display of material name in high-level silo; (2) Manual maintenance of material name in underground silo; (3) Selected silo number in high-level silo; (4) Selected silo number in underground silo; (5) Selected material type for feeding, material type error prompt; (6) Communication failure prompt for furnace #1 and #2; (7) Belt scale failure prompt; (8) Approaching set weight prompt;

[0040] With frequent material changes, a secondary confirmation function has been added.

[0041] Automatic feeding is started and stopped by weighing, and whether the material level is interlocked with automatic feeding can be set manually.

[0042] Set the loading interlock weight and confirm whether the material type to be loaded exists in the bottom bin (① the flux bottom bin and the high-level bin have the same material type; ② when multiple bottom bins have the same material type, click the priority button below the bottom bin you want to load).

[0043] After confirmation, click on the high-level hopper where you need to load materials.

[0044] A confirmation dialog box will pop up. Confirm that the bin number and material type of the high-level silo to be filled are consistent with the underground silo. If there are no problems, click "Yes". If you want to cancel or reselect, click "No". After confirmation, the automatic filling process of the current silo will begin. During the automatic filling process, other high-level silos cannot be selected.

Claims

1. An automatic material feeding system for a warehouse, characterized in that: The system includes an underground silo (1) connected to the PLC by electrical signals, an elevated silo, a feeding belt (4), a transfer station (5), and a belt conveyor unloading trolley (7). The feeding belt (4) includes 2-4 conveyor belts, each of which is connected to a transfer station (5). A belt scale is installed on the transfer station (5) connected to the first conveyor belt. The underground silo (1) includes multiple first storage silos arranged in a straight line. Each first storage silo discharges material through a vibrating motor (3) installed at its outlet. The outlet of each first storage silo is located directly above the first conveyor belt. The elevated silo includes multiple silos, and each elevated silo includes multiple second storage silos. Each second storage silo is equipped with a level gauge (8).

2. The automatic material feeding system for a warehouse according to claim 1, characterized in that: Each vibrating motor (3) and level gauge (8) is electrically connected to the PLC.

3. The automatic material feeding system for a warehouse according to claim 1, characterized in that: Each of the first storage silos includes one or more first lime storage silos, one or more first sludge ball storage silos, one or more first magnetic powder storage silos, one or more first light-burned dolomite storage silos, one or more first high-calcium ash storage silos, and one or more first raw dolomite storage silos. Each high-level silo includes one or more second lime storage silos, one or more second sludge ball storage silos, one or more second magnetic powder storage silos, one or more second light-burned dolomite storage silos, one or more second high-calcium ash storage silos, and one or more second raw dolomite storage silos.

4. The automatic material feeding system for a warehouse according to claim 1, characterized in that: Each first storage bin is equipped with a material selection input device, and each second storage bin is equipped with a material selection input device.

5. The automatic material feeding system for a warehouse according to claim 1, characterized in that: Each first storage bin is equipped with a display device for displaying the material name, material storage quantity, and status information, and each second storage bin is equipped with a display device for displaying the material name, material storage quantity, and status information.

6. The automatic material feeding system for a warehouse according to claim 1, characterized in that: Each of the first and second storage bins is equipped with a programmable memory, an input keyboard, and a display. The PLC, input keyboard, and display are all electrically connected to the programmable memory.

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