Feeding system and refining system

Abstract

The present invention provides a feeding system and a refining system. The feeding system includes a mixing bin, a discharging unit, a batching bin, a storage bin, an overhead crane, and a PLC system; the discharging unit is adjacent to the mixing bin, and the discharging unit is communicatively connected to the PLC system to quantitatively discharge the raw materials transported to the discharging position of the adjacent mixing bin into the mixing bin; the batching bin is communicatively connected to the PLC system to batch the ingredients into the mixing bin to form a mixed material according to a specified weight ratio; the storage bin is used to centrally store the mixed material from the mixing bin as the material for refining; the overhead crane includes a track beam, a sliding table, a sling, and a grab bucket. The track beam extends above a plurality of refining furnaces. The sliding table is arranged on the track beam and can move along the track beam. One end of the sling is connected to the sliding table and the other end is connected to the grab bucket. The sliding table is communicatively connected to the PLC system to be able to control the lifting of the sling, and the sliding table together with the sling and the grab bucket can reciprocate between the storage bin and a plurality of refining furnaces along the track beam. The grab bucket is communicatively connected to the PLC system.

Description

Technical Field

[0001] The present disclosure relates to the field of mineral extraction, and more particularly to a feeding system and an extraction system. Background Art

[0002] The basic process flow in the existing production fields such as smelting (or extraction) of minerals is batching → mixing → smelting. In the smelting production, high temperature is often involved. During the batching process, it is often necessary to mix raw materials in proportion. It is also not conducive to the health of workers under a large concentration of dust. In addition, the dust in the smelting raw materials often contains a large amount of sulfur, which not only seriously pollutes the environment but also corrodes the equipment structure and buildings when encountering water. Currently, in the smelting process, the entire series of processes of raw material proportioning, transportation, and charging into the furnace adopt the manual feeding method, which has low labor efficiency and many safety hazards. With the shortage of human resources, the increase in labor costs, and the harsh working environment, fewer and fewer people are engaged in this industry. Therefore, it is necessary to develop a feeding system and an extraction system with reduced labor to solve the production tasks.

[0003] The Chinese patent application for invention CN114438333A published on May 6, 2022, discloses a method for iron-free smelting production of recycled lead. Its process adopts batching → mixing → smelting. Among them, the mixture obtained in the mixing step is sent to the charging box at the top of the smelting furnace through a belt conveyor, and then the mixture is conveyed into the smelting furnace through a screw feeder at the lower part of the charging box.

[0004] For the smelting of minerals, if the belt conveying method is adopted between mixing and smelting, it will result in a one-to-one relationship between belt conveying and the smelting furnace. For the situation where multiple smelting operations are carried out simultaneously, it is necessary to establish belt conveyors between the equipment of each smelting furnace and the mixing process. In other words, multiple sets of belt conveyors and screw feeders are required, which increases the overall equipment cost of the smelting system.

[0005] In addition, when using the belt conveying method, since the mixture is conveyed on the belt, it is difficult to accurately control the quantitative supply of the mixture to the smelting furnace.

[0006] Moreover, for the situation where multiple smelting operations are carried out simultaneously, the layout of the plant space is particularly important. If the belt conveying method is adopted between mixing and smelting, it will increase the floor area of the plant, which is not conducive to cost control in terms of land use in enterprise production.

[0007] In addition, when using the belt conveyor to transport the mixed materials, there are a large number of exposed surfaces of the mixed materials, which will increase the dust generated by the belt conveyor for mixing and transporting materials in the plant. Moreover, the sulfur contained in the mineral raw materials will increase the pollution of the workshop environment and the corrosion of the refining equipment components and the workshop walls, deteriorating the quality of the working environment and reducing the service life of the equipment related to feeding and refining. Summary of the Invention

[0008] In view of the problems in the background technology, one object of the present disclosure is to provide a feeding system and a refining system, which can greatly simplify the system components of the refining system using the feeding system for multiple refining furnaces and significantly reduce the overall system equipment cost.

[0009] Another object of the present disclosure is to provide a feeding system and a refining system, which can accurately control the quantitative supply of mixed materials for the corresponding refining furnace.

[0010] Another object of the present disclosure is to provide a feeding system and a refining system, which can make full / maximum use of the valuable floor area of the plant, and is also beneficial to the cost control of land use in enterprise production.

[0011] Another object of the present disclosure is to provide a feeding system and a refining system, which can reduce the dust generated by the transportation of refining materials in the plant, thereby reducing the pollution of the workshop environment by sulfur contained in the mineral raw materials and the corrosion of the components of the feeding system and the workshop walls, improving the quality of the working environment, and extending the service life of the components of the feeding system.

[0012] Another object of the present disclosure is to provide a feeding system and a refining system, which can improve the precise automatic / intelligent control of the feeding system in discharging, batching, mixing, and supplying refining materials, thereby improving the refining accuracy of multiple refining furnaces and reducing labor.

[0013] Accordingly, a feeding system is provided. The feeding system includes a mixing bin, a discharging unit, a batching bin, a storage bin, a gantry crane, and a PLC system. The discharging unit is adjacent to the mixing bin and is communicatively connected to the PLC system to quantitatively discharge raw materials transported to the discharging position adjacent to the mixing bin into the mixing bin. The batching bin is communicatively connected to the PLC system to batch and feed the mixture into the mixing bin, so that the raw materials and the mixture in the mixing bin form a mixed material according to a specified weight ratio. The storage bin is used to centrally store the mixed material from the mixing bin as the material for refining. The gantry crane includes a track beam, a sliding table, a sling, and a grab bucket. The track beam is fixedly erected above the storage bin and extends above multiple refining furnaces. The sliding table is arranged on the track beam and can move along the track beam. One end of the sling is connected to the sliding table and the other end is connected to the grab bucket. The sliding table is communicatively connected to the PLC system to be able to control the lifting of the sling, and the sliding table together with the sling and the grab bucket can reciprocate between above the storage bin and multiple refining furnaces along the track beam. The grab bucket is communicatively connected to the PLC system to be able to open to grab the refining material from the storage bin based on the amount of the refining material required by the refining furnace, be able to close to complete the grabbing of the refining material, be able to control the opening and closing degree to leak the grabbed refining material into the storage bin, and be able to open to supply the refining material to the corresponding refining furnace.

[0014] A refining system includes multiple refining furnaces and the aforementioned feeding system, and the multiple refining furnaces are located below the track beam.

[0015] The beneficial effects of the present disclosure are as follows.

[0016] In the feeding system of the present disclosure, for multiple refining furnaces, a set of feeding system is formed through the mixing bin, the discharging unit, the batching bin, the storage bin, and the gantry crane. Such a set of feeding system forms a one-to-many correspondence with the multiple refining furnaces, which simplifies the system components of the refining system using the feeding system and greatly reduces the overall system equipment cost.

[0017] Compared with the belt conveying method in the background art, in the feeding system of the present disclosure, the one-to-many correspondence between a set of feeding system and multiple refining furnaces reduces the floor area of the plant, which is beneficial to the cost control of land use in enterprise production. Further, through the erection of the track beam, the space in the height direction is fully utilized, which also maximizes the use of the valuable floor area of the plant and is also beneficial to the cost control of land use in enterprise production.

[0018] Compared with the belt conveying method in the background art, in the feeding system of the present disclosure, by using the grab bucket of the gantry crane to quantitatively grab the refining material, the quantitative supply of the mixed material to the corresponding refining furnace can be accurately controlled.

[0019] In addition, through the cooperation of the storage bin and the overhead crane, the operations of the unloading unit, the batching bin, and the mixing bin become non-strongly associated operations with the supply of refining materials for multiple refining furnaces due to the setting of the storage bin (i.e., getting rid of the need for serial operations). In this way, the operations of the unloading unit, the batching bin, and the mixing bin and the operations between the overhead crane and multiple refining furnaces become more flexible.

[0020] In addition, compared with the belt conveying method in the background art, in the feeding system of the present disclosure, through the cooperation of the storage bin and the grab of the overhead crane, in the case of the same weight of refining materials, the exposed surface of the refining materials will be greatly reduced. This greatly reduces the dust generated in the plant due to the conveying of refining materials, and further greatly reduces the pollution of the sulfur contained in the raw materials of the minerals to the workshop environment and the corrosion of the component equipment of the feeding system and the walls of the workshop, improves the quality of the working environment, and extends the service life of the component equipment of the feeding system.

[0021] In the feeding system of the present disclosure, through the cooperation of the mixing bin, the unloading unit, and the batching bin, the mixing can be carried out regularly, quantitatively, evenly, and precisely, greatly reducing the labor cost, reducing the time and labor intensity of manual metering and manual material transportation, and the danger of manual operation, and improving the production efficiency.

[0022] In the feeding system of the present disclosure, through the setting of the PLC system, the precise automatic / intelligent control of the feeding system in unloading, batching, mixing, and supplying refining materials is improved. Furthermore, the refining accuracy of multiple refining furnaces is improved, and the labor is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view of the refining system according to the present disclosure.

[0024] Figure 2 is Figure 1 the top view of

[0025] Among them, the reference numerals are explained as follows:

[0026] 1000 refining system 54 grab

[0027] 100 feeding system 541 weight sensor

[0028] 1 mixing bin 6 PLC system

[0029] 2 unloading unit 7 screening machine

[0030] 21 weighbridge T1 first conveyor belt

[0031] 22 unloader T2 second conveyor belt

[0032] 221 bearing plate 8 crusher

[0033] Outlet of the 222 hydraulic cylinder 81

[0034] The 223 support plate 9 conveyor mechanism

[0035] The 3 batching bin 10 elevator

[0036] The 31 load cell 10a circulating chain

[0037] The 32 regulating discharge valve 10b multiple tipping buckets

[0038] The 4 storage bin K1 first sump

[0039] The 41 weight sensor K2 second sump

[0040] The 42 inclined position S ranging sensor

[0041] The 43 movable cover D distance sensor

[0042] The 5 overhead crane C partition curtain

[0043] The 51 track beam 200 refining furnace

[0044] The 52 sliding table 200a feeding port

[0045] The 53 suspension cable 200b position sensor

[0046] The 531 upper limit sensor 300 raw material truck

[0047] The 532 lower limit sensor Detailed implementation manners

[0048] The accompanying drawings illustrate embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be construed as limiting, but only as a basis for the claims and as a representative basis for teaching those of ordinary skill in the art to implement the present disclosure in various ways.

[0049] [Feeding system]

[0050] Refer to Figure 1 and Figure 2 , according to the feeding system 100 of the present disclosure, it includes a mixing bin 1, a discharging unit 2, a batching bin 3, a storage bin 4 and an overhead crane 5.

[0051] The discharging unit 2 is adjacent to the mixing bin 1. The discharging unit 2 is used to quantitatively discharge the raw materials transported to the discharging position of the adjacent mixing bin 1 into the mixing bin 1. The batching bin 3 is used to batch and supply the batching to the mixing bin 1 so that the raw materials and the batching in the mixing bin 1 form a mixture according to the specified weight ratio. The storage bin 4 is used to centrally store the mixture from the mixing bin 1 as the material for refining. The overhead crane 5 includes a track beam 51, a sliding table 52, a sling 53 and a grab 54. The track beam 51 is fixedly erected above the storage bin 4 and extends above a plurality of refining furnaces 200. The sliding table 52 is arranged on the track beam 51 and can move along the track beam 51. One end of the sling 53 is connected to the sliding table 52 and the other end is connected to the grab 54. The sliding table 52 can control the lifting of the sling 53 and the sliding table 52 together with the sling 53 and the grab 54 can reciprocate between above the storage bin 4 and a plurality of refining furnaces 200 along the track beam 51. The grab 54 can be opened to grab the refining material from the storage bin 4, can be closed to complete the grabbing of the refining material, can control the opening and closing degree to leak the grabbed refining material into the storage bin 4 and can be opened to supply the refining material to the corresponding refining furnace 200.

[0052] In the feeding system 100 of the present disclosure, for a plurality of refining furnaces 200, a set of feeding system 100 is formed by the mixing bin 1, the discharging unit 2, the batching bin 3, the storage bin 4 and the overhead crane 5. Such a set of feeding system 100 forms a one-to-many correspondence with a plurality of refining furnaces 200, which greatly simplifies the system components of the refining system 1000 adopting the feeding system 100 and greatly reduces the overall system equipment cost.

[0053] Compared with the belt conveying method in the background art, in the feeding system 100 of the present disclosure, the one-to-many correspondence between a set of feeding system 100 and a plurality of refining furnaces 200 reduces the floor area of the plant, which is beneficial to the cost control of the enterprise production in terms of land use. Further, through the erection of the track beam 51, the space in the height direction is fully utilized, which also makes the precious floor area of the plant be fully / maximally utilized, which is also beneficial to the cost control of the enterprise production in terms of land use.

[0054] Compared with the belt conveying method in the background art, in the feeding system 100 of the present disclosure, by using the grab 54 of the overhead crane 5 to quantitatively grab the refining material, the quantitative supply of the mixture to the corresponding refining furnace 200 can be accurately controlled.

[0055] In addition, through the cooperation of the storage bin 4 and the overhead crane 5, the operations of the discharging unit 2, the batching bin 3, and the mixing bin 1 become non-strongly correlated operations with the supply of refining materials to multiple refining furnaces 200 due to the setting of the storage bin 4 (i.e., they are separated from the necessary serial operations). In this way, the operations of the discharging unit 2, the batching bin 3, and the mixing bin 1 and the operations between the overhead crane 5 and multiple refining furnaces 200 become more flexible.

[0056] In addition, compared with the belt conveying method in the background art, in the feeding system 100 of the present disclosure, through the cooperation of the storage bin 4 and the grab 54 of the overhead crane 5, in the case of the same weight of refining materials, the exposed surface of the refining materials will be greatly reduced, which greatly reduces the dust generated in the plant due to the transportation of the refining materials. Furthermore, it greatly reduces the pollution of the sulfur contained in the raw materials of the minerals to the workshop environment and the corrosion of the component equipment of the feeding system 100 and the walls of the workshop, improves the quality of the working environment, and extends the service life of the component equipment of the feeding system 100.

[0057] In the feeding system 100 of the present disclosure, through the cooperation of the mixing bin 1, the discharging unit 2, and the batching bin 3, the mixing can be carried out regularly, quantitatively, evenly, and precisely, greatly reducing the labor cost, reducing the time and labor of manual measurement and manual material transportation, and the danger of manual operation, and improving the production efficiency.

[0058] Refer to Figure 2 , in an example, the feeding system 100 further includes a PLC system 6. Correspondingly, the discharging unit 2 is communicatively connected to the PLC system 6 to quantitatively discharge the raw materials transported to the discharging position of the adjacent mixing bin 1 into the mixing bin 1, the batching bin 3 is communicatively connected to the PLC system 6 to allocate the batching to the mixing bin 1 so that the raw materials and the batching in the mixing bin 1 form a mixture according to the specified weight ratio, the sliding table 52 is communicatively connected to the PLC system 6 to be able to control the lifting of the suspension cable 53 and the sliding table 52 together with the suspension cable 53 and the grab 54 can reciprocate between the upper part of the storage bin 4 and the refining furnace 200 along the track beam 51 (including uniform translation and deceleration motion when the grab 54 grabs and releases the refining materials), and the grab 54 is communicatively connected to the PLC system 6 to be able to open to grab the refining materials from the storage bin 4 based on the amount of refining materials required by the refining furnace 200, be able to close to complete the grabbing of the refining materials, be able to control the opening and closing degree to let the grabbed refining materials leak into the storage bin 4, and be able to open to supply the refining materials to the refining furnace 200. Through the setting of the PLC system 6, the precise automatic / intelligent control of the feeding system 100 in discharging, batching, mixing, and supplying the refining materials is improved, thereby improving the refining accuracy of multiple refining furnaces 200 and also reducing the labor.

[0059] In Figure 1In the illustrated example, the mixing bin 1 is funnel-shaped, which is conducive to more uniform mixing of the raw materials from the mixing bin 1 and the ingredients from the batching bin 3, and is conducive to improving the refining quality of multiple refining furnaces 200.

[0060] The raw materials transported to the unloading position can have various forms. In order to make full use of the floor area of the plant and improve the flexibility of transporting the raw materials to the unloading position, in one example, as Figure 1 and Figure 2 shown, the raw materials transported to the unloading position are provided by the raw material truck 300. The unloading unit 2 includes a weighbridge 21 and an unloader 22. The weighbridge 21 is used to weigh the raw material truck 300 to obtain the total weight of the raw materials loaded in the raw material truck 300, which is the weight of the raw materials unloaded during the unloading process. The unloader 22 is supported on the weighbridge 21, and the unloader 22 is used to lift and tilt the raw material truck 300 so that the raw materials loaded in the raw material truck 300 are gradually poured into the mixing bin 1 within a unloading time.

[0061] During the actual operation process, after the raw material truck 300 is placed on the unloader 22, a corresponding wheel locking device (not shown) can be used to lock the wheels of the raw material truck 300 on the unloader 22 (additionally, a limiter (not shown) can be configured on the unloader 22 to limit the lower rear end of the tilted raw material truck 300 to prevent the raw material truck 300 from sliding). When the unloader 22 is used to lift and tilt the raw material truck 300 in place, the tailgate of the raw material truck 300 can be opened for unloading. The tilting angle of the raw material truck 300 is used to control the unloading speed of the raw materials in the raw material truck 300 (that is, the raw materials loaded in the raw material truck 300 are gradually poured into the mixing bin 1 within a unloading time). The unloading speed of the raw materials can be obtained by weighing the weight before unloading and the weight reduction during real-time unloading through the weighbridge 21. By weighing the weight when all unloading is completed through the weighbridge 21, the weight of the raw material truck 300 can be obtained, and then the total weight of the raw materials loaded in the raw material truck 300 can be obtained.

[0062] When the feeding system 100 further includes a PLC system 6, the unloader 22 is communicatively connected to the PLC system 6. Correspondingly, the batching bin 3 communicatively connected to the PLC system 6 distributes the corresponding ingredients to the mixing bin 1 at a corresponding rate according to the amount supplied to the mixing bin 1 determined by the unloading time of the raw materials of the unloader 22 in accordance with the specified weight ratio.

[0063] In order to make full use of the floor area of the plant and improve the unloading efficiency, as Figure 1As shown, in one example, the feeding system 100 is provided with a first sunken pit K1. The weighbridge 21 is arranged above the first sunken pit K1 and aligned with the ground where the raw material truck 300 travels. The unloader 22 is located in the first sunken pit K1. The mixing bin 1 is adjacent to the weighbridge 21, and the raw materials loaded in the raw material truck 300 are directly unloaded into the mixing bin 1. In other words, the unloading unit 2 is located in the first sunken pit K1.

[0064] The unloader 22 can be implemented in various ways. In Figure 1 the example shown, the unloader 22 includes a bearing plate 221, a hydraulic cylinder 222, and a support plate 223. The bearing plate 221 is used to bear the raw material truck 300. Both ends of the hydraulic cylinder 222 are connected between the bearing plate 221 and the support plate 223. The hydraulic cylinder 222 is used to tilt the bearing plate 221 through the expansion and contraction of the piston of the hydraulic cylinder 222 so that one end of the bearing plate 221 away from the mixing bin 1 is high and one end of the bearing plate 221 close to the mixing bin 1 is low, and then the raw material truck 300 borne by the bearing plate 221 is tilted, so that the raw materials loaded in the raw material truck 300 are gradually poured into the mixing bin 1 within a unloading time. The support plate 223 is located on the weighbridge 21.

[0065] As Figure 1 shown, in one example, the batching bin 3 is provided with a weighing sensor 31 and a regulating discharge valve 32. The weighing sensor 31 is used to monitor the weight of the batching bin 3 in real time. The weighing sensor 31 is communicatively connected to the regulating discharge valve 32 to achieve the batching in the batching bin 3 being rationed at a corresponding rate by controlling the opening degree of the regulating discharge valve 32. Similarly, when the feeding system 100 further includes a PLC system 6, the weighing sensor 31 is communicatively connected to the regulating discharge valve 32 and the PLC system 6 to achieve the batching in the batching bin 3 being rationed at a corresponding rate by controlling the opening degree of the regulating discharge valve 32. Through the cooperation of the weighing sensor 31 and the regulating discharge valve 32 with the aforementioned weighbridge 21, the preparation of the mixture can be carried out regularly, quantitatively, evenly and accurately, greatly reducing the labor cost, reducing the time and labor of manual weighing and manual material transportation, and the danger of manual operation, and improving the production efficiency.

[0066] To make full use of the floor area of the factory building, as Figure 1 shown, the batching bin 3 is located directly above the mixing bin 1. The number of batching bins 3 can be at least two, adopting a one-for-one standby mode to ensure the normal operation of production.

[0067] In one example, as Figure 1As shown, a weight sensor 41 is installed at the bottom of the storage bin 4. The weight sensor 41 is used to monitor in real time the weight of the refining materials in the storage bin 4, so as to communicate with the discharging unit 2 and the batching bin 3 to supplement the mixed materials when the weight of the refining materials in the storage bin 4 is insufficient, and to communicate with the discharging unit 2 and the batching bin 3 to stop the mixing operation when the weight of the refining materials in the storage bin 4 exceeds the set amount. Similarly, when the feeding system 100 further includes a PLC system 6, the weight sensor 41 is communicatively connected to the PLC system 6, so as to communicate with the discharging unit 2 and the batching bin 3 through the PLC system 6 to supplement the mixed materials when the weight of the refining materials in the storage bin 4 is insufficient, and to communicate with the discharging unit 2 and the batching bin 3 through the PLC system 6 to stop the mixing operation when the weight of the refining materials in the storage bin 4 exceeds the set amount.

[0068] As Figure 1 described, an inclined position 42 may be provided inside the storage bin 4. When the storage bin 4 needs to replace the refining materials, the setting of the inclined position 42 is conducive to the storage bin 4 being emptied. When the refining materials in the storage bin 4 are reduced to a certain amount and the inclined position 42 is exposed or lowered to a certain height of the inclined position 42, in addition to the real-time monitoring of the aforementioned weight sensor 41, the exposed inclined position 42 also helps to manually assist in monitoring the amount of the refining materials in the storage bin 4.

[0069] In order to control the dust generated by the refining materials in the storage bin 4, a movable cover 43 may be provided at the top of the storage bin 4. The movable cover 43 is used to open and close the top of the storage bin 4. The movable cover 43 preferably adopts an automatic method. Similarly, the movable cover 43 is communicatively connected to the PLC system to realize the coordination of the operations of the movable cover 43, the mixing bin 1, and the grab 54 of the overhead crane 5.

[0070] In order to further make full use of the floor area of the factory building, as Figure 2 shown, the track beam 51 is L-shaped. A plurality of refining furnaces 200 are located on one side of the L shape, while a set of feeding system 100 formed by the aforementioned mixing bin 1, discharging unit 2, batching bin 3, storage bin 4, and overhead crane 5 is located on the other side of the L shape.

[0071] The track beam 51 of the overhead crane 5 is installed on the wall of the workshop. A distance measuring sensor S is installed above the sliding table 52 of the overhead crane 5. The distance measuring sensor S is used to determine the movement position of the sling 53 together with the grab 54. Similarly, when the feeding system 100 further includes a PLC system 6, the distance measuring sensor S is communicatively connected to the PLC system 6 to determine the movement position of the sling 53 together with the grab 54.

[0072] As Figure 1As shown, the feeding system 100 may further include a distance sensor D. The distance sensor D is installed at a position higher than the track beam 51 of the overhead crane 5 on the walls around the workshop. The distance sensor D is communicatively connected to the ranging sensor S to determine the safe distance between the sliding table 52 and the wall. Similarly, when the feeding system 100 further includes a PLC system 6, the distance sensor D is communicatively connected to the ranging sensor S and communicatively connected to the PLC system 6 to determine the safe distance between the sliding table 52 and the wall. The distance sensor D can be, but is not limited to, an optoelectronic, laser, or radar rangefinder. Since the distance sensors D are all at positions higher than the track beam 51 of the overhead crane 5 around the workshop, the signals of the distance sensors D will not be interfered with by the equipment in the workshop. Moreover, since the workshop walls are all fixed positions, the signals of the distance sensors D are stable and reliable. The communication between the distance sensor D and the ranging sensor S can not only keep track of the precise position of the sliding table 52 of the overhead crane 5 in real time (facilitating the positioning of the position where the grab 54 grabs the refining material and the position where the grab 54 releases the refining material to the corresponding refining furnace 200), but also has an effective anti-collision function for the sliding table 52.

[0073] As Figure 1 shown, the suspension cable 53 may be provided with an upper limit sensor 531 and a lower limit sensor 532. The upper limit sensor 531 is used to control the suspension cable 53 of the overhead crane 5 to lift to the upper limit when the amount of the refining material grabbed by the grab 54 meets the amount of the refining material required by the refining furnace 200, and then the grab 54 moves along the track beam 51 driven by the sliding table 52. The lower limit sensor 532 is used for the empty grab 54 to control the suspension cable 53 of the overhead crane 5 to descend to the lower limit in the storage bin 4, and then the grab 54 opens to grab the refining material in the storage bin 4. Similarly, when the feeding system 100 further includes a PLC system 6, the upper limit sensor 531 is communicatively connected to the PLC system 6. The upper limit sensor 531 is used to control the suspension cable 53 of the overhead crane 5 to lift to the upper limit through the PLC system 6 when the amount of the refining material grabbed by the grab 54 meets the amount of the refining material required by the refining furnace 200, and then the grab 54 moves along the track beam 51 driven by the sliding table 52. The lower limit sensor 532 is communicatively connected to the PLC system 6. The lower limit sensor 532 is used for the empty grab 54 to control the suspension cable 53 of the overhead crane 5 to descend to the lower limit in the storage bin 4 through the PLC system 6, and then the grab 54 opens to grab the refining material in the storage bin 4.

[0074] The grab 54 is provided with a weight sensor 541; the weight sensor 541 is used to sense the amount of the refining material grabbed by the grab 54 to determine that: when the amount of the refining material grabbed by the grab 54 is not greater than the amount of the refining material required by the refining furnace 200, the grab 54 moves driven by the sliding table 52 and supplies the refining furnace 200; when the amount of the refining material grabbed by the grab 54 is greater than the amount of the refining material required by the refining furnace 200, the grab 54 is lifted by the sling 53 to be separated from the refining material in the storage bin 4, the grab 54 is opened, the grab 54 leaks the refining material into the storage bin 4 until the amount of the refining material required by the refining furnace 200 is satisfied and then it closes, and then the grab 54 moves driven by the sliding table 52 moving along the track beam 51 and supplies the refining furnace 200. Similarly, when the feeding system 100 further includes a PLC system 6, the weight sensor 541 is communicatively connected to the PLC system 6 to determine the operation of the grab 54 as described above according to the amount of the refining material required by the refining furnace 200 provided by the PLC system 6.

[0075] The grab 54 can be a hydraulic opening and closing grab.

[0076] As Figure 2 shown, in order to effectively block dust, the feeding system 100 can further include a partition curtain C, and the partition curtain C is arranged along the track beam 51 of the overhead crane 5 and is used to isolate the feeding system 100 together with a plurality of refining furnaces 200 in a specified area of the workshop.

[0077] In order to adapt to different material properties of the raw materials of the minerals to be smelted, such as hard and large raw materials, as Figure 1 shown, the feeding system 100 can further include a screening machine 7 and a crusher 8; the screening machine 7 is hermetically connected to the mixing bin 1, and the screening machine 7 is used to screen the mixed materials to form large raw materials and / or ingredients as oversize materials and small or powdery raw materials and / or ingredients as undersize materials, and the oversize materials are transmitted to the crusher 8; the crusher 8 is used to crush the oversize materials from the screening machine 7 to obtain crushed materials; the storage bin 4 is used to centrally store the crushed materials from the crusher 8 and the undersize materials from the screening machine 7 as the refining materials. It should be noted here that the ingredients are generally powdery or finer particles and may agglomerate after being affected by moisture, so the functions of the screening machine 7 and the crusher 8 are also applicable to the ingredients. Similarly, when the feeding system 100 further includes a PLC system 6, both the screening machine 7 and the crusher 8 are communicatively connected to the PLC system 6 to realize the automatic control operations of the screening machine 7 and the crusher 8.

[0078] Through the setting of the screening machine 7, large pieces of raw materials and / or ingredients are screened out and enter the crusher 8 for crushing, which avoids the situation that large pieces of raw materials and / or ingredients are likely to damage the refining furnace 200 and cause accidents when being subsequently put into the refining furnace 200 due to their large weight. In addition, large pieces of raw materials and / or ingredients require higher temperature and time for melting in the refining furnace, wasting time and energy. In other words, through the setting of the screening machine 7 and the crusher 8, it is beneficial for the refining materials to be heated and fully react and be refined in the refining furnace 200, greatly shortening the production time and saving energy.

[0079] As Figure 1 shown, the screening machine 7 may be provided with a first conveyor belt T1, and the oversize materials are transported to the inlet of the crusher 8 through the first conveyor belt T1.

[0080] As Figure 2 shown, a conveying mechanism 9 for conveying the crushed materials may be provided at the outlet 81 of the crusher 8; the screening machine 7 may be provided with a second conveyor belt T2, and the undersize materials are transported to the conveying mechanism 9 at the outlet 81 of the crusher 8 through the second conveyor belt T2 to be conveyed together with the crushed materials at the outlet 81 of the crusher 8 by the conveying mechanism 9. The cooperation between the conveying mechanism 9 at the outlet 81 of the crusher 8 and the second conveyor belt T2 can further make full use of the floor area of the workshop. Similarly, when the feeding system 100 further includes a PLC system 6, the conveying mechanism 9 is communicatively connected to the PLC system 6 to realize the automatic control operation of the conveying mechanism 9. The crusher 8 may be a counterattack crusher, which is beneficial to improving the crushing efficiency of hard large pieces of raw materials.

[0081] As Figure 1 shown, the feeding system 100 may be provided with a second sump K2, and the screening machine 7 and the crusher 8 are located in the second sump K2, which is very convenient for the situation where the raw materials transported to the unloading position are provided by the raw material truck 300. This also further makes full use of the floor area of the workshop, and is also convenient for the raw material truck 300 to unload materials into the mixing bin 1.

[0082] In one example, as Figure 1 shown, the feeding system 100 further includes a hoist 10, and the hoist 10 is used to lift and feed the crushed materials of the crusher 8 on the second conveyor belt T2 and the undersize materials from the screening machine 7 into the storage bin 4. Adapting to the setting of the second sump K2, the hoist 10 is also located in the second sump K2; the ground where the storage bin 4 is located is aligned with the ground where the raw material truck 300 travels. Similarly, when the feeding system 100 further includes a PLC system 6, the hoist 10 is communicatively connected to the PLC system 6 to realize the automatic control operation of the hoist 10.

[0083] Further, the elevator 10 may include a circulating chain 10a and a plurality of buckets 10b. The circulating chain 10a moves in a vertical plane in a circulating manner, and the plurality of buckets 10b are arranged at intervals on the circulating chain 10a. When each bucket 10b moves below the conveying mechanism 9, it receives the crushed material from the crusher 8 and the undersize material from the screening machine 7, is lifted upward to a position higher than the storage bin 4 as it moves upward, and then is flipped so that the bucket 10b supplies the crushed material from the crusher 8 and the undersize material from the screening machine 7 to the storage bin 4.

[0084] [Refining system]

[0085] As Figure 1 and Figure 2 As shown, the refining system 1000 includes a plurality of refining furnaces 200 and the aforementioned feeding system 100. The plurality of refining furnaces 200 are located below the track beam 51. Specific descriptions of the features, effects, etc. of the feeding system 100 will not be elaborated herein.

[0086] As Figure 1 As shown, a position sensor 200b may be provided at the charging opening 200a of each refining furnace 200. The position sensor 200b confirms whether the position of the grab bucket 54 is aligned with the charging opening 200a, and after confirming that the position of the grab bucket 54 is aligned with the charging opening 200a, controls the grab bucket 54 to open so that the refining material grabbed by the grab bucket 54 drops into the refining furnace 200 through the charging opening 200a. Similarly, when the feeding system 100 further includes a PLC system 6, the position sensor 200b is communicatively connected to the PLC system 6 to confirm through the PLC system 6 whether the position of the grab bucket 54 is aligned with the charging opening 200a, and after confirming that the position of the grab bucket 54 is aligned with the charging opening 200a, the PLC system 6 controls the grab bucket 54 to open so that the refining material grabbed by the grab bucket 54 drops into the refining furnace 200 through the charging opening 200a.

[0087] The above detailed description is used to describe a plurality of exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form a plurality of additional combinations that are not shown for the purpose of brevity.

Claims

1. A feeding system, characterized in that the feeding system (100) includes a mixing bin (1), a discharging unit (2), a batching bin (3), a storage bin (4), a gantry crane (5) and a PLC system (6); the discharging unit (2) is adjacent to the mixing bin (1), and the discharging unit (2) is communicatively connected to the PLC system (6) to quantitatively discharge the raw materials transported to the discharging position adjacent to the mixing bin (1) into the mixing bin (1); the batching bin (3) is communicatively connected to the PLC system (6) to batch and distribute the batching to the mixing bin (1), so that the raw materials and the batching in the mixing bin (1) form a mixture according to a specified weight ratio; the storage bin (4) is used to centrally store the mixture from the mixing bin (1) as the material for refining; the gantry crane (5) includes a track beam (51), a sliding table (52), a sling (53) and a grab bucket (54). The track beam (51) is fixedly erected above the storage bin (4) and extends above a plurality of refining furnaces (200). The sliding table (52) is arranged on the track beam (51) and can move along the track beam (51). One end of the sling (53) is connected to the sliding table (52) and the other end is connected to the grab bucket (54). The sliding table (52) is communicatively connected to the PLC system (6) to be able to control the lifting of the sling (53), and the sliding table (52) together with the sling (53) and the grab bucket (54) can reciprocate between above the storage bin (4) and a plurality of refining furnaces (200) along the track beam (51). The grab bucket (54) is communicatively connected to the PLC system (6) to be able to open to grab the refining material from the storage bin (4) based on the amount of the refining material required by the refining furnace (200), be able to close to complete the grabbing of the refining material, be able to control the opening and closing degree to leak the grabbed refining material into the storage bin (4), and be able to open to supply the refining material to the corresponding refining furnace (200).

2. The feeding system according to claim 1, characterized in that the raw materials transported to the discharging position are provided by a raw material truck (300); the discharging unit (2) includes a weighbridge (21) and a discharger (22), the weighbridge (21) is used to weigh the raw material truck (300) to obtain the weight of the raw materials unloaded during the discharging process and the total weight of the raw materials loaded on the raw material truck (300), the discharger (22) is communicatively connected to the PLC system (6), the discharger (22) is supported on the weighbridge (21), and the discharger (22) is used to lift and tilt the raw material truck (300) so that the raw materials loaded on the raw material truck (300) are gradually poured into the mixing bin (1) within a discharging time, the batching bin (3) communicatively connected to the PLC system (6) distributes the corresponding batching to the mixing bin (1) at a corresponding rate according to the amount supplied to the mixing bin (1) determined by the discharging time of the raw materials of the discharger (22) according to the specified weight ratio.

3. The feeding system according to claim 1, characterized in that The batching bin (3) is provided with a weighing sensor (31) and a regulating discharge valve (32). The weighing sensor (31) is used to monitor the weight of the batching bin (3) in real time. The weighing sensor (31) is communicatively connected to the regulating discharge valve (32) and the PLC system (6) to achieve the feeding of the ingredients in the batching bin (3) at a corresponding rate by controlling the opening degree of the regulating discharge valve (32).

4. The feeding system according to claim 1, wherein A weight sensor (41) is installed at the bottom of the storage bin (4). The weight sensor (41) is communicatively connected to the PLC system (6). The weight sensor (41) is used to monitor the weight of the refining materials in the storage bin (4) in real time, so as to communicate with the discharging unit (2) and the batching bin (3) through the PLC system (6) to supplement the mixed materials when the weight of the refining materials in the storage bin (4) is insufficient, and to communicate with the discharging unit (2) and the batching bin (3) through the PLC system (6) to stop the operation of mixing materials when the weight of the refining materials in the storage bin (4) exceeds the set amount.

5. The feeding system according to claim 1, wherein The feeding system (100) further includes a screening machine (7) and a crusher (8). The screening machine (7) and the crusher (8) are both communicatively connected to the PLC system (6) to achieve the automatic control operation of the screening machine (7) and the crusher (8). The screening machine (7) is hermetically connected to the mixing bin (1). The screening machine (7) is used to screen the mixed materials to form large pieces of raw materials and / or ingredients as oversize materials and small pieces or powdery raw materials and / or ingredients as undersize materials. The oversize materials are transported to the crusher (8). The crusher (8) is used to crush the oversize materials from the screening machine (7) to obtain crushed materials. The storage bin (4) is used to centrally store the crushed materials from the crusher (8) and the undersize materials from the screening machine (7) as the refining materials.

6. The feeding system according to claim 5, wherein The screening machine (7) is provided with a first conveyor belt (T1). The oversize materials are transported to the inlet of the crusher (8) through the first conveyor belt (T1).

7. The feeding system according to claim 5, wherein A conveying mechanism (9) for conveying the crushed materials is provided at the outlet (81) of the crusher (8). The conveying mechanism (9) is communicatively connected to the PLC system (6) to achieve the automatic control operation of the conveying mechanism (9). The screening machine (7) is provided with a second conveyor belt (T2). The undersize materials are transported to the conveying mechanism (9) at the outlet (81) of the crusher (8) through the second conveyor belt (T2) and are conveyed by the conveying mechanism (9) together with the crushed materials at the outlet (81) of the crusher (8).

8. The feeding system according to claim 7, wherein The feeding system (100) further includes a hoist (10). The hoist (10) is communicatively connected to the PLC system (6) to achieve the automatic control operation of the hoist (10). The hoist (10) is used to lift and feed the crushed materials of the crusher (8) from the second conveyor belt (T2) and the undersize materials from the screening machine (7) into the storage bin (4).

9. The feeding system according to claim 1, characterized in that The track beam (51) of the overhead crane (5) is installed on the wall of the workshop. Above the sliding table (52) of the overhead crane (5), a ranging sensor (S) is installed. The ranging sensor (S) is communicatively connected to the PLC system (6) to determine the movement position of the hoisting rope (53) together with the grab (54).

10. The feeding system according to claim 9, characterized in that The feeding system (100) further includes a distance sensor (D). The distance sensor (D) is installed at a position higher than the track beam (51) of the overhead crane (5) on the walls around the workshop. The distance sensor (D) is communicatively connected to the ranging sensor (S) and communicatively connected to the PLC system (6) to determine the safety distance between the sliding table (52) and the wall.

11. The feeding system according to claim 1, characterized in that The grab (54) is provided with a weight sensor (541); The weight sensor (541) is used to sense the amount of the refining materials grabbed by the grab (54). The weight sensor (541) is communicatively connected to the PLC system (6) to determine, based on the amount of the refining materials required by the refining furnace (200) provided by the PLC system (6): when the amount of the refining materials grabbed by the grab (54) is not greater than the amount of the refining materials required by the refining furnace (200), the grab (54) moves driven by the sliding table (52) and supplies the refining furnace (200); when the amount of the refining materials grabbed by the grab (54) is greater than the amount of the refining materials required by the refining furnace (200), the grab (54) is lifted by the hoisting rope (53) to be separated from the refining materials in the storage bin (4), the grab (54) is opened, the grab (54) leaks the refining materials into the storage bin (4) until the amount of the refining materials meets the requirement of the refining furnace (200) and then closes. After that, the grab (54) moves driven by the sliding table (52) moving along the track beam (51) and supplies the refining furnace (200).

12. The feeding system according to claim 1, characterized in that The hoisting rope (53) is provided with an upper limit sensor (531) and a lower limit sensor (532). The upper limit sensor (531) is communicatively connected to the PLC system (6). The upper limit sensor (531) is used to control the hoisting rope (53) of the overhead crane (5) to be lifted to the upper limit through the PLC system (6) when the amount of the refining materials grabbed by the grab (54) meets the amount of the refining materials required by the refining furnace (200). Then, the grab (54) moves along the track beam (51) driven by the sliding table (52). The lower limit sensor (532) is communicatively connected to the PLC system (6). The lower limit sensor (532) is used to control the hoisting rope (53) of the overhead crane (5) to descend to the lower limit in the storage bin (4) through the PLC system (6) for an empty grab (54). Then, the grab (54) is opened to grab the refining materials in the storage bin (4).

13. A refining system, characterized in that, Including a plurality of refining furnaces (200) and the feeding system (100) according to any one of claims 1-12, and the plurality of refining furnaces (200) are located below the track beam (51).

14. The refining system according to claim 13, wherein: Each refining furnace (200) has a feeding port (200a), and a position sensor (200b) is provided at the feeding port (200a) of each refining furnace (200). The position sensor (200b) is communicatively connected to the PLC system (6) to confirm whether the position of the grab bucket (54) is aligned with the feeding port (200a) through the PLC system (6). After it is confirmed that the position of the grab bucket (54) is aligned with the feeding port (200a), the PLC system (6) controls the grab bucket (54) to open so that the refining materials grabbed by the grab bucket (54) fall into the refining furnace (200) through the feeding port (200a).

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