Automatic charging system for submerged arc furnace

Abstract

The present invention provides an automatic feeding system for an electric arc furnace, which relates to the technical field of automatic feeding and comprises a base, wherein a feeding assembly is arranged inside each feeding port, a bin position alarm is fixedly mounted on the upper surface of the base, a bottom plate is fixedly mounted on the periphery of the base, a column is fixedly mounted on the upper surface of one of the bottom plates, a batching scale and an electric tee are fixedly mounted on the surface of one end of the column, and a feeding pipe is fixedly mounted on the periphery of the electric tee. When the push rod of the present invention moves back and forth, the guide bin will rotate slightly back and forth below the feeding bin, and because the feeding bin is inclined, the material inside it will naturally slide into the inside of the guide bin, and during the reciprocating rotation of the guide bin, the material passing through the inside of the guide bin will be evenly sprinkled into the inside of the furnace body, so that the whole process reduces the unnecessary excessive operations, reduces the processing cost, achieves automatic feeding and also makes the feeding more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of automatic feeding, in particular to an automatic feeding system for a submerged arc furnace. Background Art

[0002] The submerged arc furnace is also called an arc furnace or a resistance furnace. It is mainly used for the reduction and smelting of raw materials such as ores, carbonaceous reducing agents and solvents. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, and silicon-manganese alloys. It is an important industrial raw material in the metallurgical industry and chemical raw materials such as calcium carbide. The load of the submerged arc furnace transformer is continuous and stable, the impedance voltage is low, the number of voltage regulation stages is large, the step difference is small, and the overload capacity is strong. It can be divided into two types: loaded and unexcited voltage regulation. Generally, the first few stages have a constant capacity output, and the last few stages have a constant current output. During the operation of the submerged arc furnace, it is necessary to frequently transport materials inside it. The semi-closed submerged arc furnace is one of the main production equipment for smelting various alloys.

[0003] For example, a charging system for an electric arc furnace provided in application number CN201620438913.6 includes a conveyor, a charging machine, a charging tray, multiple silos and a transmission device, the charging machine includes a frame, multiple silos and a transmission device are all arranged on the frame, the transmission device is used to drive the charging tray to rotate horizontally, the charging tray includes a tray frame and multiple support plates, the tray frame is arranged on the frame, the tray frame is provided with a rotating shaft, multiple support plates are all arranged on the rotating shaft, and a push rod device is also provided on the frame, and the push rod device is used to make the support plate rotate vertically around the rotating shaft; in the above technical scheme, the traditional charging process is manual semi-automatic charging (manual prying), which has the problems of high labor intensity, high labor cost and uneven charging, so we provide an automatic charging system for an electric arc furnace to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides an automatic charging system for a submerged arc furnace.

[0006] (II) Technical solution

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] The automatic charging system of an ore-arcing furnace comprises a base, the upper surface of the base is fixedly connected to a furnace body, an exhaust pipe is fixedly installed on the periphery of the furnace body, the interior of the exhaust pipe is communicated with the interior of the furnace body, a feed port is opened on the furnace wall of the furnace body, a plurality of the feed ports are arranged in a central ring shape of the furnace body, a feed assembly is arranged inside each of the feed ports, the feed assembly comprises a push rod and a guide bin, the inner wall of the guide bin is slidably connected to the periphery of the feed bin, the end of the push rod away from the guide bin is fixedly connected to the output end of a second cylinder, and the furnace A radar level meter mounting rod is fixedly installed on the periphery of the furnace body near the feed port, each of the radar level meter mounting rods is arranged in a central ring shape in the furnace body, a radar level meter is fixedly installed on one end of each of the radar level meter mounting rods, and the radar level meter is arranged in an inclined manner, a position alarm is fixedly installed on the upper surface of the base, a bottom plate is fixedly installed on the periphery of the base, a column is fixedly installed on the upper surface of one of the bottom plates, a batching scale and an electric tee are fixedly installed on the surface of one end of the column, and a feed pipe is fixedly installed on the periphery of the electric tee.

[0009] Preferably, a PLC control panel is fixedly mounted on the surface of one end of the column, and the PLC control panel is electrically connected to a bin alarm, a radar level meter, a batching scale, and an electric three-way device.

[0010] Preferably, a connecting cylinder is fixedly installed on the surface of one end of the column, and the connecting cylinder is located below the output end of the batching scale. The lower end of the connecting cylinder is fixedly connected to the material guide cylinder, and the interiors of the material guide cylinder and the connecting cylinder are interconnected. The lower end of the material guide cylinder is fixedly connected to the input end of the electric tee, and the input end of the electric tee is connected to the material guide cylinder.

[0011] Preferably, the output end of the electric tee is connected to the feed pipe, each of the feed pipes is arranged in an L shape, and the end of each feed pipe away from the electric tee is located above the feeding bin, and each feed pipe is installed with a solenoid valve.

[0012] Preferably, a plurality of the base plates are arranged in a central ring shape of the base, and a cylinder fixing seat is fixedly mounted on the upper surface of each of the base plates, and a first cylinder is fixedly mounted on one end of the cylinder fixing seat.

[0013] Preferably, a connecting seat is fixedly installed at the output end of the first cylinder, a sliding groove is opened inside the lower end of the connecting seat, the inner wall of the sliding groove is slidably connected to the periphery of the sliding rail, the lower surface of the sliding rail is fixedly connected to the upper surface of the bottom plate, and the end of the sliding rail away from the cylinder fixing seat is fixedly connected to the base.

[0014] Preferably, a through groove is provided inside the connecting seat and a second cylinder is movably installed inside the through groove through a cylinder mounting pin, support rods are fixedly installed on both sides of the connecting seat by bolts, the two support rods are inclined, and the ends of the two support rods away from the connecting seat are fixedly connected to the lower surface of the feeding bin.

[0015] Preferably, a connecting rod is fixedly installed on the outer side of the feeding bin, one end of the two connecting rods is fixedly connected to a connecting pin mounting block, the connecting pin mounting block is symmetrical about the center of the feeding bin, a connecting frame is fixedly installed on one end of the feeding bin, and one end of the connecting frame is fixedly connected to a connecting seat.

[0016] Preferably, a connecting pin is rotatably installed between the two connecting pin mounting blocks, a pin rod mounting block is fixedly installed in the middle of the connecting pin, and the upper surface of the pin rod mounting block is fixedly connected to the lower surface of the material guide bin.

[0017] Preferably, a push rod mounting block is fixedly mounted on the lower surface of the material guide bin, a push rod mounting groove is provided inside the push rod mounting block, and the push rod is rotatably mounted inside the push rod mounting groove via a push rod mounting pin.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention cooperates with the feeding assembly. After the materials are respectively passed through the feeding pipe and arrive at the inside of the feeding bin on the feeding assembly in sequence, and the feeding bin drives the materials into the inside of the furnace body, the second cylinder can be started to make the push rod move back and forth. When the push rod moves back and forth, the guide bin will make a small rotation back and forth under the feeding bin. Since the feeding bin is inclined, the materials inside it will naturally slide into the inside of the guide bin. During the reciprocating rotation of the guide bin, the materials passing through the guide bin will be evenly sprinkled into the inside of the furnace body. The whole process reduces the unnecessary operations, reduces the processing cost, achieves automatic loading and makes the loading more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the automatic charging system of the ore-fired furnace of the present invention;

[0021] Figure 2 It is a front structural schematic diagram of the automatic charging system of the submerged arc furnace of the present invention;

[0022] Figure 3 It is a schematic diagram of the top view of the automatic charging system of the submerged arc furnace of the present invention;

[0023] Figure 4 It is a side view structural schematic diagram of the automatic charging system of the ore-fired furnace of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a feeding component of an automatic feeding system for a submerged arc furnace according to the present invention;

[0025] Figure 6 It is a schematic diagram of the partial structure of the feeding component of the automatic feeding system of the ore-fired furnace of the present invention;

[0026] Figure 7 This is an enlarged structural schematic diagram of point a of the automatic charging system for a submerged arc furnace of the present invention;

[0027] Figure 8 This is an enlarged overall structural schematic diagram of point b of the automatic charging system for an electric arc furnace of the present invention.

[0028] In the figure: 1, base; 2, furnace body; 3, exhaust pipe; 4, feed port; 5, feed assembly; 501, push rod; 502, guide bin; 503, feed bin; 504, push rod mounting pin; 505, push rod mounting slot; 506, push rod mounting block; 507, pin rod mounting block; 508, connecting pin; 509, connecting pin mounting block; 510, connecting rod; 6, bottom plate; 7, column; 8, PLC control Plate; 9. Connecting cylinder; 10. Material guide cylinder; 11. Electric tee; 12. Feed pipe; 13. Batching scale; 14. Position alarm; 15. Radar level meter mounting rod; 16. Radar level meter; 17. Solenoid valve; 18. Slide rail; 19. Slide groove; 20. Connecting seat; 21. Cylinder fixing seat; 22. First cylinder; 23. Cylinder mounting pin; 24. Second cylinder; 25. Support rod; 26. Connecting frame. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1-8As shown, the automatic charging system of the ore-fired furnace comprises a base 1, the upper surface of the base 1 is fixedly connected to a furnace body 2, an exhaust pipe 3 is fixedly installed on the periphery of the furnace body 2, the interior of the exhaust pipe 3 is communicated with the interior of the furnace body 2, a feed port 4 is opened on the furnace wall of the furnace body 2, a plurality of feed ports 4 are arranged in a central ring shape of the furnace body 2, a feed assembly 5 is arranged inside each feed port 4, the feed assembly 5 comprises a push rod 501 and a guide bin 502, the inner wall of the guide bin 502 is slidably connected to the periphery of the feed bin 503, and the end of the push rod 501 away from the guide bin 502 is fixedly connected to the output end of the second cylinder 24 A radar level meter mounting rod 15 is fixedly installed on the periphery of the furnace body 2 near the feed port 4. Each radar level meter mounting rod 15 is arranged in a ring shape in the center of the furnace body 2. A radar level meter 16 is fixedly installed on one end of each radar level meter mounting rod 15. The radar level meter 16 is arranged in an inclined manner. A position alarm 14 is fixedly installed on the upper surface of the base 1. A bottom plate 6 is fixedly installed on the periphery of the base 1. A column 7 is fixedly installed on the upper surface of one of the bottom plates 6. A batching scale 13 and an electric tee 11 are fixedly installed on one end surface of the column 7. A feed pipe 12 is fixedly installed on the periphery of the electric tee 11.

[0032] In the present application, a plc control panel 8 is fixedly mounted on the surface of one end of the column 7, and the plc control panel 8 is electrically connected to the bin alarm 14, the radar level meter 16, the batching scale 13, and the electric three-way device 11. A connecting tube 9 is fixedly mounted on the surface of one end of the column 7, and the connecting tube 9 is located below the output end of the batching scale 13. The lower end of the connecting tube 9 is fixedly connected to the guide tube 10, and the guide tube 10 and the interior of the connecting tube 9 are mutually connected. The lower end of the guide tube 10 is fixedly connected to the input end of the electric three-way device 11, and the input end of the electric three-way device 11 is connected to the guide tube 10. The output end of the electric three-way device 11 is connected to the feed pipe 12, and each feed pipe 12 is L-shaped. The end of each feed pipe 12 away from the electric three-way device 11 is located above the feeding bin 503, and each feed pipe 12 is installed with a solenoid valve 17.

[0033] It should be noted that by adding corresponding radar level meters 16, solenoid valves 17, and bin alarms 14 on site, their signals are connected to the control system of the PLC control panel 8, and PLC programs are written to achieve different sub-functions: one-button start and stop, automatic valve opening and closing, automatic feeding, automatic alarm and other functions. The radar level meter 16, solenoid valve 17, bin alarm 14, and batching scale 13 are electrically connected to the PLC control panel 8 using existing technology. The empty bin alarm limit value and the full bin alarm limit value are set on the bin alarm 14. When the real-time material level is reached, different colors of flashing alarms and sound and light alarms are used to remind the central control operator. The system compares the real-time material level data fed back by the bin radar level meter with the set height based on this data.

[0034] In the present application, a plurality of base plates 6 are arranged in a central ring shape of the base 1, and a cylinder fixing seat 21 is fixedly installed on the upper surface of each base plate 6, and a first cylinder 22 is fixedly installed on one end of the cylinder fixing seat 21. A connecting seat 20 is fixedly installed on the output end of the first cylinder 22, and a slide groove 19 is provided inside the lower end of the connecting seat 20, and the inner wall of the slide groove 19 is slidably connected to the periphery of the slide rail 18, and the lower surface of the slide rail 18 is fixedly connected to the upper surface of the base plate 6, and the end of the slide rail 18 away from the cylinder fixing seat 21 is fixedly connected to the base 1. A through groove is provided inside the connecting seat 20, and a second cylinder 24 is movably installed inside the through groove through a cylinder mounting pin 23. Support rods 25 are fixedly installed on both sides of the connecting seat 20 by bolts, and the two support rods 25 are arranged obliquely, and the ends of the two support rods 25 away from the connecting seat 20 are fixedly connected to the lower surface of the feeding bin 503.

[0035] It should be noted that when the connecting seat 20 moves, the slide groove 19 will slide on the slide rail 18 to ensure the stability of the connecting seat 20 during the movement process. The support rod 25 is used to support the feeding bin 503 to stabilize it and ensure that the material entering the feeding bin 503 will not cause crushing to it. The first cylinder 22 is used to control the forward and backward movement of the feeding assembly 5 so that the feeding assembly 5 can be flexibly moved.

[0036] In the present application, a connecting rod 510 is fixedly installed on the outer side of the feeding bin 503, one end of the two connecting rods 510 is fixedly connected to the connecting pin mounting block 509, the connecting pin mounting block 509 is symmetrical with the center of the feeding bin 503, and a connecting frame 26 is fixedly installed on one end of the feeding bin 503, and one end of the connecting frame 26 is fixedly connected to the connecting seat 20. A connecting pin 508 is rotatably installed between the two connecting pin mounting blocks 509, a pin rod mounting block 507 is fixedly installed in the middle of the connecting pin 508, and the upper surface of the pin rod mounting block 507 is fixedly connected to the lower surface of the guide bin 502. A push rod mounting block 506 is fixedly installed on the lower surface of the guide bin 502, and a push rod mounting groove 505 is opened inside the push rod mounting block 506, and the push rod 501 is rotatably installed inside the push rod mounting groove 505 through the push rod mounting pin 504.

[0037] It should be noted that during use, the external materials reach the interior of the batching scale 13 through the cooperation of the electric conveyor belt and the material placing machine, and finally enter the interior of the electric three-way device 11 through the connecting tube 9 and the guide tube 10. After the electric three-way device 11 is started, the materials are respectively passed through the feeding pipe 12 to reach the interior of the feeding bin 503 on the feeding assembly 5 in sequence, and then the first cylinder 22 is controlled by the PLC control board 8 to start, and the connecting seat 20 is pushed to make the feeding bin 503 drive the materials inside it to move to the interior of the furnace body 2, and the feeding bin 503 drives the materials to enter the furnace body 2. After the inside of the furnace body 2, the second cylinder 24 can be started to make the push rod 501 move back and forth. When the push rod 501 moves back and forth, the guide bin 502 will rotate slightly back and forth under the feeding bin 503. Since the feeding bin 503 is inclined, the material inside it will naturally slide into the inside of the guide bin 502. During the reciprocating rotation of the guide bin 502, the material passing through the guide bin 502 will be evenly sprinkled into the inside of the furnace body 2. The whole process reduces the unnecessary operations and reduces the processing cost, achieving automatic loading while also making the loading more uniform. It also needs to be explained that, during the movement of the push rod 501, the push rod mounting pin 504 will rotate inside the push rod mounting groove 505. When the guide bin 502 rotates slightly, the materials inside the guide bin 502 will be scattered back and forth, and will not fall together and cause squeezing. The guide bin 502 and the feeding bin 503 are made of metal materials and have certain high temperature resistance. There is a certain distance between the inner wall of one end of the guide bin 502 and the outer periphery of the feeding bin 503, so that when the guide bin 502 rotates, it will not generate friction with the outside of the feeding bin 503, so as to better protect the guide bin 502.

[0038] The working principle of the automatic charging system of the submerged arc furnace:

[0039] First, during use, the external materials reach the interior of the batching scale 13 through the cooperation of the electric conveyor belt and the material placing machine, and finally enter the interior of the electric three-way device 11 through the connecting tube 9 and the guide tube 10. After the electric three-way device 11 is started, the materials are respectively passed through the feeding pipe 12 to reach the interior of the feeding bin 503 on the feeding assembly 5 in sequence, and then the first cylinder 22 is controlled to start through the PLC control board 8, and the connecting seat 20 is pushed to make the feeding bin 503 drive the materials inside it to move to the interior of the furnace body 2, and the feeding bin 503 drives the materials to enter the furnace body 2. After the interior is filled, the second cylinder 24 can be started to make the push rod 501 move back and forth. When the push rod 501 moves back and forth, the guide bin 502 will rotate slightly back and forth under the feeding bin 503. Since the feeding bin 503 is set at an angle, the material inside it will naturally slide into the interior of the guide bin 502. During the reciprocating rotation of the guide bin 502, the material passing through the guide bin 502 will be evenly sprinkled into the interior of the furnace body 2. The whole process reduces the unnecessary operations and the processing cost, and achieves automatic loading while making the loading more uniform.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic charging system for a submerged arc furnace, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a furnace body (2), an exhaust pipe (3) is fixedly installed on the periphery of the furnace body (2), the interior of the exhaust pipe (3) is connected to the interior of the furnace body (2), a feed port (4) is provided on the furnace wall of the furnace body (2), a plurality of the feed ports (4) are arranged in a central ring shape of the furnace body (2), each of the feed ports (4) is provided with a feed assembly (5) that can be moved to the interior of the feed port (4), the feed assembly (5) comprises a push rod (501) and a guide bin (502), the inner wall of the guide bin (502) is slidably connected to the periphery of the feed bin (503), the end of the push rod (501) away from the guide bin (502) is fixedly connected to the output end of the second cylinder (24), the A radar level meter mounting rod (15) is fixedly mounted on the periphery of the furnace body (2) near the feed port (4), each of the radar level meter mounting rods (15) is arranged in a central ring shape of the furnace body (2), one end of each of the radar level meter mounting rods (15) is fixedly mounted with a radar level meter (16), and the radar level meter (16) is arranged in an inclined manner. A bin position alarm (14) is fixedly mounted on the upper surface of the base (1), a bottom plate (6) is fixedly mounted on the periphery of the base (1), a column (7) is fixedly mounted on the upper surface of one of the bottom plates (6), a batching scale (13) and an electric tee (11) are fixedly mounted on one end surface of the column (7), and a feed pipe (12) is fixedly mounted on the periphery of the electric tee (11).

2. The automatic charging system for a submerged arc furnace according to claim 1, characterized in that: A PLC control panel (8) is fixedly mounted on one end surface of the column (7), and the PLC control panel (8) is electrically connected to a bin alarm (14), a radar level meter (16), a batching scale (13), and an electric three-way device (11).

3. The automatic charging system for a submerged arc furnace according to claim 1, characterized in that: A connecting cylinder (9) is fixedly mounted on the surface of one end of the column (7). The connecting cylinder (9) is located below the output end of the batching scale (13). The lower end of the connecting cylinder (9) is fixedly connected to a material guide cylinder (10). The material guide cylinder (10) and the interior of the connecting cylinder (9) are interconnected. The lower end of the material guide cylinder (10) is fixedly connected to the input end of an electric three-way device (11). The input end of the electric three-way device (11) is connected to the material guide cylinder (10).

4. The automatic charging system for a submerged arc furnace according to claim 1, characterized in that: The output end of the electric three-way device (11) is connected to the feed pipe (12), each of the feed pipes (12) is arranged in an L shape, and the end of each of the feed pipes (12) away from the electric three-way device (11) is located above the feeding bin (503), and each of the feed pipes (12) is installed with a solenoid valve (17).

5. The automatic charging system for a submerged arc furnace according to claim 1, characterized in that: A plurality of base plates (6) are arranged in a central ring shape around the base (1); a cylinder fixing seat (21) is fixedly mounted on the upper surface of each base plate (6); and a first cylinder (22) is fixedly mounted on one end of the cylinder fixing seat (21); A connecting seat (20) is fixedly mounted on the output end of the first cylinder (22); a slide groove (19) is provided inside the lower end of the connecting seat (20); the inner wall of the slide groove (19) is slidably connected to the periphery of the slide rail (18); the lower surface of the slide rail (18) is fixedly connected to the upper surface of the bottom plate (6); and one end of the slide rail (18) away from the cylinder fixing seat (21) is fixedly connected to the base (1).

6. The automatic charging system for a submerged arc furnace according to claim 5, characterized in that: A through groove is arranged inside the connecting seat (20), and a second cylinder (24) is movably mounted inside the through groove via a cylinder mounting pin (23). Support rods (25) are fixedly mounted on both sides of the connecting seat (20) via bolts. The two support rods (25) are arranged at an angle, and the ends of the two support rods (25) away from the connecting seat (20) are fixedly connected to the lower surface of the feeding bin (503).

7. The automatic charging system for a submerged arc furnace according to claim 6, characterized in that: A connecting rod (510) is fixedly installed on the outer side of the feeding bin (503), one end of the two connecting rods (510) is fixedly connected to a connecting pin mounting block (509), and the connecting pin mounting block (509) is symmetrical with respect to the center of the feeding bin (503). A connecting frame (26) is fixedly installed on one end of the feeding bin (503), and one end of the connecting frame (26) is fixedly connected to a connecting seat (20).

8. The automatic charging system for a submerged arc furnace according to claim 7, characterized in that: A connecting pin (508) is rotatably mounted between the two connecting pin mounting blocks (509), a pin rod mounting block (507) is fixedly mounted in the middle of the connecting pin (508), and the upper surface of the pin rod mounting block (507) is fixedly connected to the lower surface of the material guide bin (502).

9. The automatic charging system for a submerged arc furnace according to claim 1, characterized in that: A push rod mounting block (506) is fixedly mounted on the lower surface of the material guide bin (502), a push rod mounting groove (505) is provided inside the push rod mounting block (506), and the push rod (501) is rotatably mounted inside the push rod mounting groove (505) via a push rod mounting pin (504).

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