Direct-current submerged arc furnace with feeding device

Abstract

The utility model discloses a direct current submerged arc furnace with a feeding device, and particularly relates to the technical field of submerged arc furnaces, the direct current submerged arc furnace comprises a furnace body, the lower end of the furnace body is fixedly connected with a supporting frame, a discharging device is installed in the middle of the upper end of the furnace body, and a feeding assembly is installed on the right portion of the upper end of the furnace body. The left portion and the right portion of the upper end of the furnace body are jointly and fixedly connected with a feeding device. According to the direct-current submerged arc furnace with the feeding device, raw materials can be crushed and scattered through the designed feeding assembly, the sizes of the raw materials are uniform, the raw materials make full contact with reactants and react with the reactants in the smelting process, the raw materials can be dispersed to the middle side and the outer ring in the furnace body through the designed discharging device, and therefore the raw materials can be evenly mixed. The raw materials can evenly fall into the furnace body, it is guaranteed that heat in the furnace is distributed more evenly, and the situation of local overheating or underheating is avoided, so that the heating efficiency is improved, rapid proceeding of chemical reactions can be promoted, the smelting time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnaces, in particular to a direct current submerged arc furnace with a feeding device. Background Art

[0002] Submerged arc furnace, also known as electric arc furnace or resistance furnace, is an important metallurgical equipment.

[0003] Submerged arc furnace is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent; it mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc. These ferroalloys are important raw materials in the metallurgical industry.

[0004] The submerged arc furnace uses carbon or magnesium refractory materials as the furnace lining and uses self-heating electrodes; the electrodes are inserted into the charge for submerged arc operation, using the energy of the arc and the energy generated by the resistance of the charge when the current passes through the charge to melt the metal.

[0005] Adding a feeding device to the main body of the submerged arc furnace can continuously add raw materials to the submerged arc furnace, avoiding the tediousness and discontinuity of manual feeding, thereby improving the smelting efficiency. Therefore, a direct current submerged arc furnace with a feeding device is needed.

[0006] Chinese patent announcement No. CN213901905U discloses a charging device for an electric arc furnace, including a box body, a discharge pipe is provided at the top of the box body near the left side, an opening is provided at the right side of the box body near the top, a baffle is penetrated by the inner cavity of the opening, grooves are provided at the front and rear sides of the inner cavity of the box body near the top, and limit blocks matching the grooves are fixedly connected at the front and rear sides of the baffle, and the two limit blocks are fitted with adjacent groove inner cavities, the left side of the baffle is inserted into the left side wall of the inner cavity of the box body, and the right side of the box body is fixedly connected to a first fixing plate near the rear side.

[0007] The above patent still has the following deficiencies in the process of implementation:

[0008] Through the mutual cooperation among gears, tooth blocks, connecting blocks, transmission rods, collecting troughs, sliders and slides, the collecting trough is driven to flip and continuous feeding is carried out into the ore-fired furnace. Although this can achieve the purpose of continuous feeding, it will pile up the raw materials in one place, with the situation of high in the middle and low on both sides. At this time, the raw materials at the bottom are smelted too slowly, resulting in uneven smelting rate and reduced integrity of the device. Utility Model Content

[0009] The main purpose of the utility model is to provide a direct current ore-fired furnace with a charging device, which can effectively solve the problem that potential safety hazards are likely to occur when the ore-fired furnace is manually charged.

[0010] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0011] A DC ore-fired furnace with a charging device comprises an ore-fired furnace body, a support frame is fixedly connected to the lower end of the ore-fired furnace body, a feeding device is installed at the middle of the upper end of the ore-fired furnace body, a charging assembly is installed at the upper right end of the ore-fired furnace body, and a feeding device is fixedly connected to the left and right upper ends of the ore-fired furnace body;

[0012] The feeding assembly comprises two supporting legs, the two supporting legs are respectively fixedly connected to the front and rear sides of the right upper end of the ore-fired furnace body, the ends of the two supporting legs close to each other are fixedly connected to a feeding bin, the front and rear parts of the left and right ends of the feeding bin are respectively connected to the crushing wheels for common rotation, the right parts of the outer surfaces of the two crushing wheels are fixedly connected to spur gears, the left end of the crushing wheel at the front is fixedly connected to a stepping motor, and the right part of the outer surface of the crushing wheel at the rear and the right part of the feeding device are commonly fixedly connected to a belt pulley assembly;

[0013] The feeding device comprises two support plates, the two support plates are respectively fixedly connected to the middle sides of the left and right upper ends of the ore-fired furnace body, the upper ends of the two support plates are commonly fixedly connected to a feeding bin, the middle part of the inner cavity of the feeding bin is rotatably connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to an auger blade;

[0014] The unloading device comprises an unloading bin and a transmission rod, the unloading bin is respectively fixedly connected between the discharge port of the feeding bin and the upper end of the ore-fired furnace body, a fixing frame is fixedly connected to the middle side of the right upper end of the unloading bin, a rotating motor is fixedly connected inside the fixing frame, a friction cam is fixedly connected to the output end of the rotating motor, the transmission rod is rotatably connected to the middle side edge of the right upper end of the unloading bin, a friction wheel is fixedly connected to the upper part of the outer surface of the transmission rod, a turntable is fixedly connected to the lower part of the outer surface of the transmission rod, four arc holes are opened in the middle part of the upper end of the turntable, and five rectangular plates are fixedly connected to the annular array at the upper end of the friction cam;

[0015] The friction cam and the friction wheel are both rotatably connected to the upper end of the lower material bin, the friction cam and the friction wheel are in contact with each other, and the lower left side of the feed bin is connected with the left side of the lower material bin and the interior of the ore-fired furnace body.

[0016] Preferably, the two spur gears are meshed with each other.

[0017] Preferably, the right portion of the outer surface of the rotating shaft is fixedly connected to the belt and pulley assembly, and the feeding bin is communicated with the upper right portion of the feeding bin.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The device can crush and break up the raw materials through the designed feeding components to make the raw materials of uniform size. The particle size of the raw materials has a direct impact on the smelting effect and product quality. By crushing and breaking up, it can be ensured that the particle size of the raw materials meets the smelting requirements, thereby improving the smelting efficiency and product quality, allowing the raw materials to fully contact and react with the reactants during the smelting process, thereby increasing the reaction speed and reaction efficiency, and effectively improving the smelting quality of the device.

[0020] The device can disperse the raw materials to the middle side and outer circle of the inner body of the submerged arc furnace through the designed feeding device, so that the raw materials can fall into the inner body of the submerged arc furnace evenly, so that there will be no situation that one side is high and the other side is low, ensuring that the heat distribution in the furnace is more uniform, avoiding local overheating or underheating, thereby improving the heating efficiency, and promoting the rapid progress of chemical reactions, shortening the smelting time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the feeding component of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the feeding device of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the feeding device of the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of the feeding device of the utility model.

[0026] In the figure: 1. ore-fired furnace body; 2. support frame; 3. unloading device; 4. feeding device; 5. feeding assembly; 51. feeding bin; 52. spur gear; 53. stepping motor; 54. belt and pulley assembly; 55. supporting leg; 56. crushing wheel; 41. supporting plate; 42. rotating shaft; 43. auger blade; 44. feeding bin; 31. unloading bin; 32. turntable; 33. arc hole; 34. transmission rod; 35. friction wheel; 36. fixing frame; 37. rotating motor; 38. friction cam; 39. rectangular plate. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1As shown, a DC electric furnace with a feeding device includes an electric furnace body 1, a support frame 2 is fixedly connected to the lower end of the electric furnace body 1, a feeding device 3 is installed in the middle of the upper end of the electric furnace body 1, a feeding assembly 5 is installed at the upper right part of the electric furnace body 1, and a feeding device 4 is fixedly connected to the left and right parts of the upper end of the electric furnace body 1.

[0029] The unloading device 3, the feeding device 4 and the charging assembly 5 in the device are integrated with the submerged arc furnace and are part of the submerged arc furnace.

[0030] The device is suitable for small pieces of raw materials; the device is powered by industrial electricity.

[0031] In the above, the feeding component 5 is started to work, and the raw material is placed into the feeding component 5. The feeding component 5 crushes and scatters the raw material, so as to ensure that the particle size of the raw material meets the smelting requirements, thereby improving the smelting efficiency and product quality. The crushed raw material enters the feeding device 4, and the feeding device 4 then piles and transports the raw material so that it can enter the next step in a unified manner. The feeding device 4 then rotates to feed the crushed raw material into the unloading device 3, and then the unloading device 3 is started to move. A part of the raw material falling into the unloading device 3 will fall into the bottom wall of the submersible arc furnace body 1 from the middle, and a part will remain on the unloading device 3. The unloading device 3 then performs an indirect transmission effect to throw the raw material accumulated on the unloading device 3 to the outer ring, so that the raw material can fall evenly into the submersible arc furnace body 1, so that there will be no uneven rate during heating. The unloading device 3 can make the raw material fall on the unloading device 3 first, and then throw it off the inner outer ring of the submersible arc furnace body 1 through the indirect rotation design.

[0032] In the above description, two circular holes are provided at the front upper end of the submerged arc furnace body 1 to facilitate the electrode tube to be inserted into the submerged arc furnace body 1 .

[0033] Further, in order to achieve the purpose of crushing and breaking up the small pieces of raw materials by the feeding component 5, refer to Figure 2 The feeding assembly 5 includes two supporting legs 55, which are respectively fixedly connected to the front and rear sides of the upper right part of the ore-fired furnace body 1, and the ends of the two supporting legs 55 close to each other are fixedly connected to the feeding bin 51, and the front and rear parts of the left and right ends of the feeding bin 51 are respectively connected to the crushing wheels 56 for common rotation, and the right parts of the outer surfaces of the two crushing wheels 56 are fixedly connected to the spur gears 52, and the left end of the crushing wheel 56 at the front is fixedly connected to the stepping motor 53, and the right part of the outer surface of the crushing wheel 56 at the rear and the right part of the feeding device 4 are fixedly connected to the belt pulley assembly 54;

[0034] The two spur gears 52 mesh with each other.

[0035] In the above, the stepper motor 53 is started to rotate, and the stepper motor 53 then drives the connected crushing wheel 56 to rotate through the coupling. When the crushing wheel 56 at the front rotates, it will drive the spur gear 52 installed on its outer surface to rotate. The spur gear 52 at the front is driven to rotate by the meshing relationship with the rear spur gear 52. When the spur gear 52 at the rear rotates, it will drive the connected crushing wheel 56 to rotate. Through the transmission relationship of the two spur gears 52, the crushing wheel 56 at the rear rotates clockwise, while the crushing wheel 56 at the front rotates counterclockwise, so that it can crush the raw materials put into the feeding bin 51. After the raw materials are crushed and dispersed, their surface area increases, which is conducive to full contact and reaction with the reactants during the smelting process, thereby improving the reaction speed and reaction efficiency. Finally, the raw materials enter the feeding device 4 and enter the next step.

[0036] In the above, the belt pulley assembly 54 is composed of two pulleys and a transmission belt. The two pulleys are respectively fixedly connected to the left edge of the outer surface of the crushing wheel 56 located at the rear and the left part of the feeding device 4. The transmission belt is fixedly connected between the two pulleys, so that when the crushing wheel 56 rotates, it drives the pulley connected to its surface to rotate. The pulley now drives the pulley connected to the feeding device 4 to rotate through the transmission belt, thereby driving the feeding device 4 to move.

[0037] In the above, in order to achieve the purpose of the feeding device 4 stacking and conveying the crushed raw materials to the next step, refer to Figure 3 The feeding device 4 includes two support plates 41, which are respectively fixedly connected to the middle sides of the left and right upper ends of the ore-fired furnace body 1, and a feeding bin 44 is fixedly connected to the upper ends of the two support plates 41. A rotating shaft 42 is rotatably connected to the middle of the inner cavity of the feeding bin 44, and an auger blade 43 is fixedly connected to the outer surface of the rotating shaft 42;

[0038] The right portion of the outer surface of the rotating shaft 42 is fixedly connected to the belt and pulley assembly 54 , and the feeding bin 51 is communicated with the upper right portion of the feeding bin 44 .

[0039] In the above, the connected rotating shaft 42 is driven by the belt and pulley assembly 54 to rotate on the left wall and the right end of the feed bin 44. When the rotating shaft 42 rotates, it drives the auger blade 43 connected to its surface to rotate. When the auger blade 43 rotates, the raw materials entering from the feeding bin 51 are transported to the left. The design of the auger blade 43 allows the raw materials to be piled up during transportation, so that they can be fed into the unloading device 3 from the discharge port on the lower left side of the feed bin 44, so that they will not be sparsely scattered, thereby improving the smelting effect and product quality.

[0040] Further, in order to achieve the purpose of dispersing the raw materials delivered by the feeding device 3 and making the smelting rate uniform, refer to Figure 4 and Figure 5 The unloading device 3 includes an unloading bin 31 and a transmission rod 34. The unloading bin 31 is respectively fixedly connected between the discharge port of the feed bin 44 and the upper end of the ore-fired furnace body 1. A fixing frame 36 is fixedly connected to the middle side of the upper right part of the unloading bin 31. A rotating motor 37 is fixedly connected inside the fixing frame 36. A friction cam 38 is fixedly connected to the output end of the rotating motor 37. The transmission rod 34 is rotatably connected to the middle side edge of the upper right part of the unloading bin 31. A friction wheel 35 is fixedly connected to the upper part of the outer surface of the transmission rod 34. A turntable 32 is fixedly connected to the lower part of the outer surface of the transmission rod 34. Four arc holes 33 are opened in the middle part of the upper end of the turntable 32. Five rectangular plates 39 are fixedly connected to the upper end of the friction cam 38 in a circular array.

[0041] The friction cam 38 and the friction wheel 35 are both rotatably connected to the upper end of the lower material bin 31 , the friction cam 38 and the friction wheel 35 are in close contact with each other, and the lower left side of the feed bin 44 is connected to the left side of the lower material bin 31 and the interior of the ore-fired furnace body 1 .

[0042] In the above, the feed bin 44 will transport the raw materials from the discharge port into the discharge bin 31. By designing the slope of the discharge bin 31, the raw materials will slide onto the turntable 32. Part of the raw materials will fall into the bottom wall of the ore-heating furnace body 1 from the arc hole 33 opened on the turntable 32, and part of the raw materials will accumulate on the turntable 32. By starting the rotating motor 37 to rotate, when the rotating motor 37 rotates, the friction cam 38 is driven to rotate through the coupling. The friction cam 38 is designed to be half convex and half concave, so that the friction cam 38 indirectly transmits power to the friction wheel 35, so that the friction wheel 35 The friction wheel 35 rotates indirectly. When the friction wheel 35 rotates, the transmission rod 34 connected to it will be driven to rotate. When the transmission rod 34 rotates, the power is transmitted to the turntable 32, driving the turntable 32 to rotate. The raw materials accumulated on the turntable 32 are thrown to the outer ring of the submersible arc furnace body 1 under the support of the rectangular plate 39. The rectangular plate 39 utilizes the principle of centrifugal force to throw the raw materials to the outer ring of the submersible arc furnace body 1, so that the raw materials can be evenly dropped on the middle side and the outer ring of the submersible arc furnace body 1, so that the melting rate of the raw materials is uniform, and the raw materials will not be higher on one side and lower on the other side in the submersible arc furnace body 1.

[0043] In the above, the friction cam 38 indirectly drives the friction wheel 35 to rotate, so that the raw materials fall on the turntable 32 and accumulate first, and then the friction wheel 35 is driven by the power indirectly transmitted by the friction cam 38 to drive the turntable 32 to rotate, and the raw materials accumulated on the upper end of the turntable 32 are thrown to the inner outer ring of the ore-fired furnace body 1, thereby improving the practicality of the device.

[0044] In the above, the friction cam 38 and the friction wheel 35 are both made of hard rubber, so that the friction between the two is increased, ensuring that the friction cam 38 can better indirectly transfer power to the friction wheel 35, driving the friction wheel 35 to rotate.

[0045] It should be noted that the specific installation method, circuit connection method and control method of the stepper motor 53 and the rotary motor 37 used in the present invention are all conventional designs, and the present invention will not elaborate on them in detail.

[0046] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A DC ore-fired furnace with a charging device, comprising an ore-fired furnace body (1), characterized in that: The lower end of the submerged arc furnace body (1) is fixedly connected to a support frame (2), a feeding device (3) is installed at the middle of the upper end of the submerged arc furnace body (1), a feeding assembly (5) is installed at the right upper end of the submerged arc furnace body (1), and a feeding device (4) is fixedly connected to the left and right upper ends of the submerged arc furnace body (1); The feeding assembly (5) comprises two supporting legs (55), the two supporting legs (55) are respectively fixedly connected to the front side and the rear side of the upper right part of the ore-fired furnace body (1), the ends of the two supporting legs (55) close to each other are fixedly connected to a feeding bin (51), the front and rear parts of the left and right ends of the feeding bin (51) are respectively rotatably connected to a crushing wheel (56), the right parts of the outer surfaces of the two crushing wheels (56) are both fixedly connected to a spur gear (52), the left end of the crushing wheel (56) at the front is fixedly connected to a stepping motor (53), and the right part of the outer surface of the crushing wheel (56) at the rear and the right part of the feeding device (4) are jointly fixedly connected to a belt pulley assembly (54); The feeding device (4) comprises two support plates (41), the two support plates (41) are respectively fixedly connected to the middle sides of the left and right upper ends of the ore-fired furnace body (1), a feeding bin (44) is fixedly connected to the upper ends of the two support plates (41), a rotating shaft (42) is rotatably connected to the middle of the inner cavity of the feeding bin (44), and an auger blade (43) is fixedly connected to the outer surface of the rotating shaft (42); The material discharge device (3) comprises a material discharge bin (31) and a transmission rod (34), the material discharge bin (31) being fixedly connected between the discharge port of the material feed bin (44) and the upper end of the ore-bearing furnace body (1), a fixing frame (36) being fixedly connected to the middle side of the right upper end of the material discharge bin (31), a rotating motor (37) being fixedly connected inside the fixing frame (36), a friction cam (38) being fixedly connected to the output end of the rotating motor (37), the transmission rod (34) being rotationally connected to the middle side edge of the right upper end of the material discharge bin (31), a friction wheel (35) being fixedly connected to the upper part of the outer surface of the transmission rod (34), a turntable (32) being fixedly connected to the lower part of the outer surface of the transmission rod (34), four arc-shaped holes (33) being provided in the middle part of the upper end of the turntable (32), and five rectangular plates (39) being fixedly connected in a circular array to the upper end of the friction cam (38); The friction cam (38) and the friction wheel (35) are both rotatably connected to the upper end of the lower material bin (31), the friction cam (38) and the friction wheel (35) are in close contact with each other, and the lower left side of the feed bin (44) is in communication with the left side of the lower material bin (31) and the interior of the ore-fired furnace body (1).

2. The DC ore-fired furnace with a charging device according to claim 1, characterized in that: The two spur gears (52) are meshed with each other.

3. The DC ore-fired furnace with a charging device according to claim 1, characterized in that: The right portion of the outer surface of the rotating shaft (42) is fixedly connected to the belt pulley assembly (54), and the feeding bin (51) is connected to the upper right side of the feeding bin (44).

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