Feeding structure of submerged arc furnace

Abstract

The utility model discloses a submerged arc furnace feeding structure which comprises a stock bin, a guide rail frame and a driving wheel set, and is characterized in that the guide rail frame is erected above a plurality of submerged arc furnaces, the driving wheel set is arranged on the guide rail frame in a reciprocating motion mode, the stock bin is installed at the bottom of the driving wheel set, the stock bin is of a funnel-shaped structure, and the driving wheel set is arranged on the stock bin. Material supplementing openings are formed in the two sides of the stock bin, the top in the stock bin extends to the bottom of the stock bin to be coaxially and rotationally provided with a feeding mechanism, the feeding mechanism at least comprises a material throwing assembly, the material throwing assembly is located at the outlet position of the stock bin, the material throwing assembly rotates relative to the stock bin and can ascend and descend, and the material throwing assembly rotates to throw materials. On one hand, the distribution uniformity of materials in the furnace after feeding is improved, sufficient combustion of the materials is guaranteed, and on the other hand, the discharging opening is automatically closed and opened.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnace equipment, in particular to a feeding structure for a submerged arc furnace. Background Art

[0002] The submerged arc furnace is a key equipment used for smelting various minerals in industrial production. Its working principle is to gradually heat the mineral raw materials through high-temperature combustion and cause chemical reactions, ultimately producing the required substances. During the working process of the submerged arc furnace, the performance of the feeding structure directly affects factors such as the temperature inside the furnace and the air flow velocity, thereby affecting the smelting quality of the mineral raw materials.

[0003] When the existing feeding structure feeds the submerged arc furnace, it mostly uses the dumping method for feeding. For example, the Chinese patent with the publication number CN219121083U discloses a feeding device for a submerged arc furnace, which directly uses a feeding trolley to dump raw materials into the submerged arc furnace for feeding, resulting in the material in the furnace being distributed in a piled-up shape after feeding, leading to uneven temperature distribution in the furnace, and further having an adverse impact on the combustion efficiency and the smelting quality of the ore.

[0004] Therefore, it is necessary to provide a feeding structure for a submerged arc furnace to solve the problems mentioned in the above background art. Summary of the Utility Model

[0005] To achieve the above object, the utility model provides the following technical solution: A feeding structure for a submerged arc furnace, comprising: a material bin, a guide rail frame, and a driving wheel set. It is characterized in that: the guide rail frame is erected above a plurality of submerged arc furnaces, the driving wheel set is reciprocally movable on the guide rail frame, the material bin is installed at the bottom of the driving wheel set, the material bin is of a funnel-shaped structure, feeding ports are arranged on both sides of the material bin, a feeding mechanism is coaxially rotatably arranged from the inner top to the bottom of the material bin, the feeding mechanism at least includes a throwing component, the throwing component is located at the outlet part of the material bin, and the throwing component is rotatable and liftable relative to the material bin.

[0006] As a preferred technical solution of the utility model, the throwing component includes a rotation driving structure, the rotation driving structure is installed on the top of the material bin, and the output end of the rotation driving structure penetrates into the material bin and is installed with a rotating shaft;

[0007] The rotating shaft is coaxially arranged with the material bin;

[0008] A first telescopic rod is coaxially fixed at the lower end of the rotating shaft. The first telescopic rod includes a sleeve section and a sliding rod section. A throwing disc is coaxially slidably arranged on the sliding rod section, and a support block is arranged at the bottom of the sliding rod section for supporting and limiting the throwing disc;

[0009] Above the throwing tray, a limiting cylinder frame is arranged at intervals. The limiting cylinder frame is coaxially fixed on the sliding rod section of the first telescopic rod. The outer wall of the limiting cylinder frame is in sliding and sealing fit with the inner wall of the lower part of the silo. A feeding port is formed between the bottom of the limiting cylinder frame and the upper end surface of the throwing tray.

[0010] As a preferred technical solution of the present invention, the feeding mechanism further includes:

[0011] Fixed seats, the fixed seats are respectively fixed on the upper and lower parts of the rotating shaft. A plurality of C-shaped stirring frames are vertically installed evenly along the circumferential direction between the fixed seats. The openings of the C-shaped stirring frames face the rotating shaft;

[0012] The C-shaped stirring frame includes a first stirring frame and a second stirring frame. The first stirring frame is used for stirring the part near the wall surface in the silo. The specification of the second stirring frame is smaller than that of the first stirring frame. The second stirring frame is used for stirring the middle position in the silo;

[0013] The first stirring frame and the second stirring frame are arranged alternately along the circumferential direction of the fixed seat.

[0014] As a preferred technical solution of the present invention, the throwing tray is a conical disk structure with a smaller upper part and a larger lower part. Throwing convex strips are evenly arranged along the circumferential direction of the conical surface of the throwing tray. The throwing convex strips are of a linear structure or an arc structure.

[0015] As a preferred technical solution of the present invention, the limiting cylinder frame includes:

[0016] Connecting plates, the connecting plates are horizontally fixed on the sliding rod of the first telescopic rod through ring seats, and a plurality of connecting plates are arranged along the circumferential direction of the ring seat; the outer ends of the connecting plates are jointly fixed with a sealing cylinder, and the outer wall of the sealing cylinder is in sliding and sealing fit with the inner wall of the lower part of the silo.

[0017] As a preferred technical solution of the present invention, a plurality of second telescopic rods are evenly arranged vertically downward along the circumferential direction on the inner wall of the sealing cylinder. The lower ends of the second telescopic rods are fixed on the throwing tray.

[0018] As a preferred technical solution of the present invention, the guide rail frame is provided with double guide rails. The guide rail frame is a linear guide rail or a circular guide rail.

[0019] As a preferred technical solution of the present invention, a gravity sensor is arranged on the throwing tray.

[0020] Compared with the prior art, the present invention provides a feeding structure for a submerged arc furnace, which has the following beneficial effects:

[0021] In the present utility model, by arranging a guide rail frame and a driving wheel set, the silo can reciprocate above the submerged arc furnace to perform feeding operations on multiple submerged arc furnaces in sequence, improving the feeding efficiency of the submerged arc furnace; and an upper feeding mechanism is arranged to rotate and sprinkle raw materials by using an adjustable feeding port and a throwing disc, increasing the distribution range of the raw materials in the furnace, improving the temperature distribution in the furnace, ensuring sufficient combustion of the raw materials. At the same time, C-shaped stirring frames with different specifications are arranged on the upper feeding mechanism to stir the materials at different positions in the silo, preventing the materials from caking and affecting the feeding efficiency. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of a feeding structure for a submerged arc furnace;

[0023] Figure 2 is a schematic diagram of the sectional structure of the silo of a feeding structure for a submerged arc furnace;

[0024] Figure 3 is a schematic diagram of the structure of the C-shaped stirring frame of a feeding structure for a submerged arc furnace;

[0025] Figure 4 is a schematic diagram of the structure of the limit cylinder frame and the throwing disc of a feeding structure for a submerged arc furnace;

[0026] In the figure: 1, silo; 2, guide rail frame; 3, driving wheel set; 4, replenishing port; 5, upper feeding mechanism; 51, rotary drive structure; 52, rotating shaft; 53, fixed seat; 54, C-shaped stirring frame; 55, first telescopic rod; 56, limit cylinder frame; 57, throwing disc; 58, second telescopic rod; 59, throwing rib; 541, first stirring frame; 542, second stirring frame; 561, connecting plate; 562, sealing cylinder. Detailed Embodiment

[0027] Please refer to Figures 1-4 , the present utility model provides a feeding structure for a submerged arc furnace, including a silo 1, a guide rail frame 2 and a driving wheel set 3, characterized in that: the guide rail frame 2 is erected above multiple submerged arc furnaces, the driving wheel set 3 is reciprocally movably arranged on the guide rail frame 2, the silo 1 is installed at the bottom of the driving wheel set 3, the silo 1 is of a funnel-shaped structure, replenishing ports 4 are arranged on both sides of the silo 1, an upper feeding mechanism 5 is coaxially rotatably arranged from the inner top to the bottom of the silo 1, the upper feeding mechanism 5 at least includes a throwing component, the throwing component is located at the outlet part of the silo 1, and the throwing component rotates relative to the silo 1 and is liftable.

[0028] It should be explained that when charging the submerged arc furnace, a certain amount of raw materials (the raw materials are granular materials with uniform texture) are loaded into the bin 1 through the feeding port 4. Then, the driving wheel set 3 drives the bin 1 to move along the guide rail frame 2 to the upper part of the submerged arc furnace to be charged. The furnace cover is opened, and the feeding mechanism 5 descends to expose the feeding port, and then rotates and throws the materials in the submerged arc furnace to improve the uniformity of the material distribution in the furnace after feeding, and avoid the accumulation of materials in the furnace after feeding, which affects the combustion efficiency and smelting effect.

[0029] Among them, the driving wheel set 3 at least includes a connecting seat, a power source, and a plurality of traveling wheels clamped in the track of the guide rail frame 2. The connecting seat is used to connect the bin and install the traveling wheels. The traveling wheels are driven by the power source to reciprocate along the guide rail frame 2, driving the bin 1 to charge a plurality of submerged arc furnaces in sequence.

[0030] In this embodiment, the throwing component includes a rotation driving structure 51. The rotation driving structure 51 is installed on the top of the bin 1, and the output end of the rotation driving structure 51 penetrates into the bin 1 and is installed with a rotating shaft 52;

[0031] The rotating shaft 52 is coaxially arranged with the bin 1;

[0032] A first telescopic rod 55 is coaxially and fixedly arranged at the lower end of the rotating shaft 52. The first telescopic rod 55 includes a sleeve section and a sliding rod section. A throwing disc 57 is coaxially slidably arranged on the sliding rod section. A support block is arranged at the bottom of the sliding rod section to support and limit the throwing disc 57;

[0033] A limiting cylinder frame 56 is arranged at intervals above the throwing disc 57. The limiting cylinder frame 56 is coaxially and fixedly arranged on the sliding rod section of the first telescopic rod 55. The outer wall of the limiting cylinder frame 56 is slidably and sealingly matched with the inner wall of the lower part of the bin 1. An upper feeding port is formed between the bottom of the limiting cylinder frame 56 and the upper end surface of the throwing disc 57. Specifically, the rotation driving structure 51 is a motor.

[0034] It should be explained that in the initial state, the throwing disc 57 is located at the upper end of the support block under the action of the material gravity. An upper feeding port is formed between the upper end surface of the throwing disc 57 and the bottom of the limiting cylinder frame 56. At this time, the first telescopic rod 55 is in a contracted state, and the position of the throwing disc 57 is higher than the outlet position of the bin 1 and can block the outlet of the bin 1; when feeding is required, the first telescopic rod 55 extends, and the limiting cylinder frame 56 and the throwing disc 57 move down synchronously, and the upper feeding port is exposed and rotates and throws the materials driven by the rotation driving structure 51.

[0035] After the feeding is completed, the first telescopic rod 55 contracts to drive the throwing disc 57 to move up into the bin 1. The throwing disc 57 cooperates with the inner wall of the bin 1 to block the remaining materials in the bin 1 to avoid waste of raw materials spilling.

[0036] In this embodiment, the feeding mechanism 5 further includes:

[0037] A fixed seat 53, which is fixedly arranged at the upper and lower parts of the rotating shaft 52 respectively. A plurality of C-shaped stirring frames 54 are vertically and evenly installed circumferentially between the fixed seats 53, and the openings of the C-shaped stirring frames 54 face the rotating shaft 52;

[0038] The C-shaped stirring frame 54 includes a first stirring frame 541 and a second stirring frame 542. The first stirring frame 541 is used for stirring the raw materials near the wall surface in the bin 1, and the second stirring frame 542 is smaller in size than the first stirring frame 541 and is used for stirring the middle position in the bin 1;

[0039] The first stirring frame 541 and the second stirring frame 542 are arranged alternately along the circumference of the fixed seat 53.

[0040] Specifically, during the feeding process of the submerged arc furnace, the rotating drive structure 51 drives the rotating shaft 52 to drive the C-shaped stirring frame 54 to rotate to stir the raw materials in the bin 1, avoiding the caking of the raw materials and affecting the feeding efficiency. At the same time, stirring frames of different specifications are set to stir different parts in the bin 1, improving the effect of preventing the raw materials from caking by stirring.

[0041] In this embodiment, the throwing disc 57 is a conical disc structure with a smaller upper part and a larger lower part. Throwing ribs 59 are evenly arranged along the circumference of the conical surface of the throwing disc 57, and the throwing ribs 59 are of a linear structure or an arc structure.

[0042] In this embodiment, the limit cylinder frame 56 includes:

[0043] Connecting plates 561, which are horizontally and fixedly arranged on the sliding rod of the first telescopic rod 55 through ring seats, and a plurality of connecting plates 561 are arranged circumferentially along the ring seats; the outer ends of the connecting plates 561 are commonly fixedly provided with a sealing cylinder 562, and the outer wall of the sealing cylinder 562 is in sliding and sealing cooperation with the inner wall of the lower part of the bin 1.

[0044] It should be explained that through the setting of the sealing cylinder 562, when the feeding port moves downward, the sealing cylinder 562 and the bin 1 are always in a sealed state, avoiding the leakage of raw materials from other parts outside the feeding port and improving the feeding accuracy.

[0045] In this embodiment, a plurality of second telescopic rods 58 are vertically and evenly arranged along the circumference of the inner wall of the sealing cylinder 562, and the lower ends of the second telescopic rods 58 are fixedly arranged on the throwing disc 57.

[0046] It should be noted that the size of the discharge port can be adjusted by setting the second telescopic rod 58, thereby changing the feeding efficiency. In addition, after the feeding is completed, the second telescopic rod 58 can be retracted to completely close the feeding port, improving the sealing performance of the device.

[0047] In this embodiment, the guide rail frame 2 is provided with double guide rails, and the guide rail frame 2 is a linear guide rail or a circular guide rail.

[0048] In this embodiment, a gravity sensor is provided on the throwing disc 57. By setting the gravity sensor, it is convenient to monitor the remaining amount of raw materials in the bin 1, improve the control accuracy of the feeding amount of raw materials in the submerged arc furnace, and achieve quantitative feeding.

[0049] During specific implementation, a certain amount of raw materials are loaded into the bin from the feeding port, and then the bin is driven by the driving wheel set to move along the guide rail frame to the upper part of the submerged arc furnace where feeding is required. The furnace cover is opened, the feeding port is extended into the furnace by lowering the feeding mechanism, and then the feeding port is opened and the throwing disc is driven by the motor to rotate and throw materials, so as to increase the distribution range of the materials in the furnace after feeding.

[0050] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A submerged arc furnace charging structure, comprising: A material bin (1), a guide rail frame (2) and a driving wheel group (3), characterized in that: the guide rail frame (2) is erected above a plurality of ore-fired furnaces, the driving wheel group (3) is reciprocatingly arranged on the guide rail frame (2), the material bin (1) is installed at the bottom of the driving wheel group (3), the material bin (1) is a funnel-shaped structure, and feeding ports (4) are arranged on both sides of the material bin (1), and a feeding mechanism (5) is arranged coaxially from the top of the material bin (1) to the bottom thereof, and the feeding mechanism (5) at least includes a throwing assembly, the throwing assembly is located at the outlet of the material bin (1), and the throwing assembly is rotatable and can be raised and lowered relative to the material bin (1).

2. The charging structure of a submerged arc furnace according to claim 1, characterized in that: The throwing assembly comprises a rotary drive structure (51), the rotary drive structure (51) is installed on the top of the silo (1), and the output end of the rotary drive structure (51) penetrates and extends into the silo (1) and is installed with a rotating shaft (52); The rotating shaft (52) is coaxially arranged with the silo (1); A first telescopic rod (55) is coaxially fixedly disposed at the lower end of the rotating shaft (52), the first telescopic rod (55) comprising a sleeve section and a sliding rod section, a material throwing plate (57) is coaxially slidably disposed on the sliding rod section, and a support block is disposed at the bottom of the sliding rod section for supporting and limiting the material throwing plate (57); A limiting drum frame (56) is spaced apart above the throwing plate (57), and the limiting drum frame (56) is coaxially fixed on the sliding rod section of the first telescopic rod (55). The outer wall of the limiting drum frame (56) is slidably and sealedly matched with the lower inner wall of the silo (1), and a loading port is formed between the bottom of the limiting drum frame (56) and the upper end surface of the throwing plate (57).

3. The charging structure of a submerged arc furnace according to claim 2, characterized in that: The feeding mechanism (5) further comprises: A fixed seat (53), the fixed seat (53) being fixedly mounted on the upper and lower parts of the rotating shaft (52), and a plurality of C-shaped stirring racks (54) being evenly and vertically mounted between the fixed seats (53) along the circumference thereof, and the opening of the C-shaped stirring racks (54) being arranged toward the rotating shaft (52); The C-shaped stirring frame (54) comprises a first stirring frame (541) and a second stirring frame (542), wherein the first stirring frame (541) is used to stir a portion of the material bin (1) close to the wall surface, and the second stirring frame (542) is smaller in size than the first stirring frame (541), and is used to stir a portion of the material bin (1) in the middle. The first stirring frame (541) and the second stirring frame (542) are alternately arranged along the circumference of the fixing seat (53).

4. The charging structure of a submerged arc furnace according to claim 2, characterized in that: The throwing disc (57) is a conical disc structure that is small at the top and large at the bottom. The conical surface of the throwing disc (57) is evenly provided with throwing convex strips (59) along its circumference. The throwing convex strips (59) are linear structures or arc structures.

5. The charging structure of a submerged arc furnace according to claim 2, characterized in that: The limiting cylinder frame (56) comprises: a connecting plate (561), wherein the connecting plate (561) is horizontally fixed on the sliding rod of the first telescopic rod (55) through a ring seat, and a plurality of connecting plates (561) are arranged along the circumference of the ring seat; a sealing cylinder (562) is commonly fixed at the outer end of each connecting plate (561), and the outer wall of the sealing cylinder (562) is slidably sealed with the lower inner wall of the silo (1).

6. The charging structure of a submerged arc furnace according to claim 5, characterized in that: A plurality of second telescopic rods (58) are evenly arranged vertically downward along the circumference of the inner wall of the sealing cylinder (562), and the lower ends of the second telescopic rods (58) are fixed on the throwing plate (57).

7. The charging structure of a submerged arc furnace according to claim 1, characterized in that: The guide rail frame (2) is provided with double guide rails, and the guide rail frame (2) is a linear guide rail or a circular guide rail.

8. The charging structure of a submerged arc furnace according to claim 6, characterized in that: The throwing plate (57) is provided with a gravity sensor.

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