An automatic feeding equipment for smelting furnace

Abstract

The present invention discloses an automated feeding device for a smelting furnace, comprising a pit feeding system, a ferroalloy storage, baking and feeding system, a smelting furnace rear translational self-unloading feeding system, a rear furnace charging system, a converter smelting system, a crane, three electric vibrating feeders, a ferroalloy charging bin, a dust collection system, a vertical belt conveyor, a reversible small belt conveyor, a ferroalloy storage and baking bin, a weighing trolley, an electric vibrating feeding and distributing device, a scale plate machine, a motor and a reducer, a translational self-unloading hopper, a local platform, a rear furnace ferroalloy charging bin, a ferroalloy discharge device, a dump truck, a ferroalloy charging bin, and a dust collection system. This invention reduces labor costs and the costs of cranes and forklifts, while improving the degree of automation, reducing manual intervention, reducing and eliminating safety hazards to operators, ensuring the personal safety of workers, and greatly improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking, in particular to a smelting furnace feeding automation device. Background Art

[0002] The ferroalloy storage bin of smelting furnaces such as converters or electric furnaces is located in the smelting furnace span, close to the steel-tapping column line. 6-8 ferroalloy storage bins are set on the furnace side. The storage bins are often equipped with ferroalloy baking and heating functions. The ferroalloy storage bin is usually charged by a 10t crane from the smelting furnace span to lift the ferroalloy bottom-opening material tank or ferroalloy storage and transportation ton bags for charging. This operation requires one person on the ground to hang the material tank or ton bag; one person is required to load the material or untie the ton bag and command the overhead crane on the storage bin opening platform; the overhead crane also requires one overhead crane driver to operate. The ferroalloy storage bin on the smelting furnace side is usually used to feed the smelting furnace by a forklift on the smelting furnace operating platform. The forklift transports the scattered hoppers to receive the ferroalloy weighed by the weighing car under the ferroalloy storage bin. The scattered hoppers are supplied to the alloy charging bin behind the furnace by the forklift for standby use. During the steel-tapping process of the smelting furnace, the ferroalloy is added to the ladle by the hopper behind the furnace to complete the alloying and deoxidation process of the molten steel. The feeding process requires a forklift and a forklift driver. This is for the feeding of materials from the ferroalloy storage bin and the feeding of materials from the ferroalloy storage bin to the smelting furnace. It requires a lot of manpower and the mechanical costs of cranes and forklifts are high. Due to the frequent intervention of human operators, there are also some safety hazards. Summary of the Invention

[0003] In response to the above technical problems in the related art, the present invention proposes an automatic feeding equipment for a smelting furnace, which can overcome the above shortcomings of the prior art.

[0004] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0005] A smelting furnace feeding automation equipment includes a pit feeding system, a lifting device is provided on the top of the pit feeding system, one end of the pit feeding system is connected to a ferroalloy storage, baking and feeding system, the ferroalloy storage, baking and feeding system is connected to a smelting furnace rear translation self-unloading feeding system, a rear furnace feeding system is provided at the bottom of the smelting furnace rear translation self-unloading feeding system, the rear furnace feeding system is connected to a converter smelting system, the pit feeding system includes a feeding bin, a dust collection system is provided on the top of the feeding bin, a first electric vibrating feeder is provided at the bottom of the feeding bin, and a vertical belt conveyor is provided at the bottom of the first electric vibrating feeder.

[0006] Furthermore, the lifting equipment is arranged on the top of the pit feeding system through a slide rail, and the lifting equipment can move on the slide rail.

[0007] Furthermore, the pit loading system dumps the raw materials through a transportation tool, and the vertical belt conveyor has a Z-shaped structure.

[0008] Furthermore, the ferroalloy storage, baking and feeding system includes a reversible small belt conveyor, which is arranged at the bottom of one end of the vertical belt conveyor. The reversible small belt conveyor has a walking function. A ferroalloy storage and baking bin is provided at the bottom of the reversible small belt conveyor. A second electric vibrating feeder is provided at the bottom of the ferroalloy storage and baking bin. A weighing bin is provided at the bottom of the second electric vibrating feeder. A distributor is provided at the bottom of the weighing bin. A scale plate machine is provided at the bottom of the distributor, and a power mechanism is provided at one end of the scale plate machine.

[0009] Furthermore, a third electric vibrating feeder is provided under the head of the scale plate machine, and a self-unloading hopper is provided at the bottom end of the third electric vibrating feeder, and the self-unloading hopper is arranged on a local platform.

[0010] Furthermore, a ferroalloy charging bin after the converter furnace is provided at the bottom of the local platform, and the ferroalloy charging bin after the converter furnace is connected to the self-unloading hopper through a pipeline.

[0011] Furthermore, a ferroalloy discharging device is provided inside the ferroalloy charging bin behind the converter.

[0012] Furthermore, the front half of the scale plate machine is a horizontal structure, and the rear half is provided with a horizontal angle of 135 degrees. The scale plate machine is provided with a baffle at a certain distance.

[0013] Furthermore, the dust collection system adopts a structure with three-side sealing and one-side air sealing.

[0014] The beneficial effects of the present invention are: reducing labor costs and crane and forklift machinery costs, while improving the degree of automation, reducing manual operation intervention, reducing and eliminating safety hazards to operators, ensuring the personal safety of staff, and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a plan view of an automated smelting furnace feeding device according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of an automated feeding device for a smelting furnace according to an embodiment of the present invention;

[0018] Figure 3This is a cross-sectional view of a post-furnace charging system of a smelting furnace feeding automation equipment according to an embodiment of the present invention;

[0019] Figure 4 This is a partial diagram of a pit loading system of an automated smelting furnace feeding equipment according to an embodiment of the present invention.

[0020] In the figure: 1. Pit loading system, 2. Ferroalloy storage, baking and feeding system, 3. Horizontal self-unloading feeding system behind the smelting furnace, 4. Charging system behind the furnace, 5. Converter smelting system, 6. Lifting equipment, 11. Transport vehicle, 12. First electric vibrating feeder, 13. Charging bin, 14. Dust collection system, 15. Vertical belt conveyor, 21. Reversible small belt conveyor, 22. Ferroalloy storage and baking bin, 23. Second electric vibrating feeder, 24. Weighing bin, 25. Distributor, 26. Scale plate machine, 27. Power mechanism, 31. Third electric vibrating feeder, 32. Self-unloading hopper, 33. Local platform, 41. Ferroalloy charging bin behind the converter, 42. Ferroalloy discharging device. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0022] As shown in Figures 1-4, an automatic feeding equipment for a smelting furnace according to an embodiment of the present invention includes a pit feeding system 1, a lifting device 6 is provided on the top of the pit feeding system 1, one end of the pit feeding system 1 is connected to the ferroalloy storage, baking and feeding system 2, the ferroalloy storage, baking and feeding system 2 is connected to the smelting furnace rear translation self-unloading feeding system 3, the smelting furnace rear translation self-unloading feeding system 3 is provided with a rear furnace feeding system 4 at the bottom, the rear furnace feeding system 4 is connected to the converter smelting system 5, the pit feeding system 1 includes a feeding bin 13, a dust collection system 14 is provided on the top of the feeding bin 13, a first electric vibrating feeder 12 is provided at the bottom of the feeding bin 13, and a vertical belt conveyor 15 is provided at the bottom of the first electric vibrating feeder 12.

[0023] In a specific embodiment, the lifting device 6 is arranged on the top of the pit feeding system 1 through a slide rail, and the lifting device 6 can move on the slide rail.

[0024] In a specific embodiment, the pit loading system 1 dumps the raw materials through a transportation tool 11, and the vertical belt conveyor 15 has a Z-shaped structure.

[0025] In a specific embodiment, the ferroalloy storage, baking and feeding system 2 includes a reversible small belt conveyor 21, which is arranged at the bottom of one end of the vertical belt conveyor 15. The reversible small belt conveyor 21 has a walking function. A ferroalloy storage and baking bin 22 is provided at the bottom of the reversible small belt conveyor 21, and a second electric vibrating feeder 23 is provided at the bottom of the ferroalloy storage and baking bin 22. A weighing bin 24 is provided at the bottom of the second electric vibrating feeder 23, and a distributor 25 is provided at the bottom of the weighing bin 24. A scale plate machine 26 is provided at the bottom of the distributor 25, and a power mechanism 27 is provided at one end of the scale plate machine 26.

[0026] In a specific embodiment, a third electric vibrating feeder 31 is provided under the head of the scale machine 26 , a self-unloading hopper 32 is provided at the bottom end of the third electric vibrating feeder 31 , and the self-unloading hopper 32 is provided on a local platform 33 .

[0027] In a specific embodiment, a ferroalloy charging bin 41 after the converter furnace is provided at the bottom of the local platform 33 , and the ferroalloy charging bin 41 after the converter furnace is connected to the self-unloading hopper 32 through a pipeline.

[0028] In a specific embodiment, a ferroalloy discharge device 42 is provided inside the ferroalloy charging bin 41 after the converter.

[0029] In a specific embodiment, the front half of the slab machine 26 is a horizontal structure, and the rear half is provided with a horizontal angle of 135 degrees. The slab machine 26 is provided with a baffle at a certain distance.

[0030] In a specific embodiment, the dust collection system 14 adopts a structure with three-side sealing and one-side air sealing.

[0031] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0032] During specific use, according to the automatic tipping and unloading process of the transport vehicle 11 (bulk ferroalloy transported by a dump truck) described in the present invention, the dump truck 11 unloads the ferroalloy into a ferroalloy loading silo 13 in a pit. A dust collection system 14, sealed on three sides and airtight on one side, is installed above the loading silo 13. This system 14 is connected to a secondary dust removal duct, meeting dust removal and environmental protection requirements during the unloading process. The ferroalloy in the ferroalloy loading silo is fed by a first electric vibrating feeder 12 below the silo to a vertical belt conveyor 15 below the electric vibrating feeder. The vertical belt conveyor 15 then feeds a reversible small belt conveyor 21 above the ferroalloy inlet of the smelting furnace. This reversible small belt conveyor 21 has a travel function, enabling dual-sided unloading through reversible operation. It then travels horizontally to discharge from 3-4 silos on each side, for a total of 6-8 silos on both sides, thereby achieving automated loading of the ferroalloy storage and baking silo 22.

[0033] 3. The ferroalloy is baked in the ferroalloy storage and baking bin 22 on the cross-furnace side of the smelting furnace. The baked ferroalloy reaches a temperature of 600-800°C. The baked ferroalloy is fed to a weighing trolley or weighing bin 24 below the bin via a second electric vibrating feeder 23. The weighing trolley or weighing bin 24 then feeds the slab machine 26 below it via an electric vibrating feeder and a material distributor 25 below it. The weighing trolley can be either mobile or fixed. Each weighing bin corresponds to one of two storage bins. An electric vibrating feeder and a material distributor 25 are installed below the weighing trolley or weighing bin. The slab machine 26 is powered by a power component 27 (motor and reducer) located on the upper platform.

[0034] 4. The motor and reducer 27 of the slab machine 26 are installed on the second-floor platform behind the smelting furnace. A third electric vibrating feeder 31 is installed under the slab machine 26. Ferroalloy is fed to the ferroalloy transport translation self-unloading hopper 32 behind the furnace through the slab machine 26 and the electric vibrating feeder (C) 31 under the slab machine 26. The ferroalloy transport translation self-unloading hopper 32 behind the furnace is located on the shunting local platform 33 between the platform behind the furnace and the second-floor platform. That is, this local platform is suspended from the steel structure of the second-floor platform. Structurally, a track is provided on the local platform 33 to realize the movement of the translational self-unloading hopper 32. This translational self-unloading hopper 32 supplies 2-3 converter furnace rear ferroalloy charging bins 41 respectively. A ferroalloy discharge device 42 is provided below the rear ferroalloy charging bins 41. According to calculations, 1-2 translational self-unloading hoppers 32 can be provided to realize the transportation process of the baked ferroalloy from the ferroalloy storage bin 22 to the alloy charging bin 41 behind the smelting furnace, thereby realizing automation.

[0035] 5. The automation design fully considers communication with the smelting furnace system, with functions such as automatic identification of the furnace base, steel grade, and ferroalloy weight upload. This enables communication between the weighing system and the smelting furnace steelmaking MES system, allowing data to be transferred to facilitate cost accounting. The weighing bin 24 (weighing trolley) also has an automatic calibration function.

[0036] 6. Each ferroalloy unloading point of the ferroalloy feeding automation system is connected to the secondary dust removal system, and the dust removal valve of each ferroalloy unloading point is automatically interlocked and controlled separately without human intervention. It is open when in use and closed when not in use.

[0037] 7. The converter smelting system 5 in the figure is a smelting furnace. The ferroalloy baking storage bin on the side of the smelting furnace is an automated system and equipment for feeding the smelting furnace, which is also suitable for use in the electric furnace steelmaking process.

[0038] 8. This invention provides an automated system and equipment for feeding ferroalloy baking storage bin on the side of smelting furnace to the smelting furnace, so as to reduce labor costs and mechanical costs of crane 6 and forklift, and at the same time improve the degree of automation, reduce manual operation intervention, and reduce and eliminate safety hazards to operators.

[0039] To sum up, with the help of the above-mentioned technical solution of the present invention, labor costs and crane and forklift machinery costs are reduced, while the degree of automation is improved, manual operation intervention is reduced, and safety hazards to operator safety are reduced and eliminated, thereby ensuring the personal safety of staff and greatly improving work efficiency.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smelting furnace feeding automation equipment, characterized in that, The invention comprises a pit feeding system (1), wherein the top of the pit feeding system (1) is provided with a lifting device (6), one end of the pit feeding system (1) is connected to a ferroalloy storage, baking and feeding system (2), the ferroalloy storage, baking and feeding system (2) is connected to a smelting furnace rear translation self-unloading feeding system (3), the bottom of the smelting furnace rear translation self-unloading feeding system (3) is provided with a rear furnace feeding system (4), the rear furnace feeding system (4) is connected to a converter smelting system (5), the pit feeding system (1) comprises a feeding bin (13), the top of the feeding bin (13) is provided with a dust collection system (14), the bottom of the feeding bin (13) is provided with a first electric vibrating feeder (12), the bottom of the first electric vibrating feeder (12) is provided with a vertical belt conveyor (15); the lifting device (6) movable on a slide rail; the ferroalloy storage, baking and feeding system (2) comprises a reversible small belt conveyor (21), the reversible small belt conveyor (21) is arranged at the bottom of one end of the vertical belt conveyor (15), the reversible small belt conveyor (21) has a walking function, a ferroalloy storage and baking bin (22) is provided at the bottom of the ferroalloy storage and baking bin (22), a second electric vibrating feeder (23) is provided at the bottom of the second electric vibrating feeder (23), a weighing bin (24) is provided at the bottom of the weighing bin (24), a distributor (25) is provided at the bottom of the distributor (25), a scale plate machine (26) is provided at one end of the scale plate machine (26), and a power mechanism (27) is provided at one end of the scale plate machine (26); the dust collection system (14) adopts a structure with three-side sealing and one-side air sealing.

2. The smelting furnace feeding automation equipment according to claim 1, characterized in that: The pit loading system (1) dumps the raw materials through a transport vehicle (11), and the vertical belt conveyor (15) has a Z-shaped structure.

3. The smelting furnace feeding automation equipment according to claim 1, characterized in that: A third electric vibrating feeder (31) is provided under the head of the scale plate machine (26), a self-unloading hopper (32) is provided at the bottom end of the third electric vibrating feeder (31), and the self-unloading hopper (32) is provided on a local platform (33).

4. The smelting furnace feeding automation equipment according to claim 3, characterized in that: A ferroalloy charging bin (41) after the converter furnace is provided at the bottom of the local platform (33), and the ferroalloy charging bin (41) after the converter furnace is connected to the self-unloading hopper (32) through a pipeline.

5. The smelting furnace feeding automation equipment according to claim 4, characterized in that: A ferroalloy discharge device (42) is provided inside the ferroalloy charging bin (41) behind the converter.

6. The smelting furnace feeding automation equipment according to claim 1, characterized in that: The front half of the scale plate machine (26) is a horizontal structure, the angle between the rear half and the front half is 135 degrees, and the scale plate machine (26) is provided with a baffle at a certain distance.

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