Direct-current submerged arc furnace body

Abstract

The utility model relates to the technical field of direct-current power supply submerged arc furnaces, and discloses a direct-current submerged arc furnace body which comprises a furnace shell, a furnace cover, a short net, a rectifier cabinet, an electrode, a blanking system, an annular trolley cloth, a clean flue gas chimney and a crude flue gas chimney, and further comprises the furnace cover arranged at the top of the furnace shell. Four electrodes are adopted for furnace body equipment, every two electrodes correspond to one set of power sources to form a circuit loop, the two sets of electrodes are symmetrically arranged, the reasonable inter-electrode distance is selected, a reasonable smelting area is formed, it is guaranteed that crucible areas below the electrodes are communicated, dead material areas are not formed in the electrodes, and smooth tapping is guaranteed. The problems of disordered arrangement and high safety risk of conventional slide wires are reduced, when a waste gas chimney exhausts waste gas, a liquid inlet pipe can be communicated with a water pipe, particles in the waste gas are subjected to dust fall spraying through a spraying shell, and meanwhile, the waste gas is exhausted after being purified by matching with a filter plate, so that the pollution of the waste gas to the environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current power supply electric arc furnace technical field, concretely is a direct current electric arc furnace body. BACKGROUND

[0002] Direct current power supply electric arc furnace is a kind of high-temperature industrial furnace using direct current power supply as energy, mainly used for smelting metal ore or other high-temperature processing equipment.Compared with traditional alternating current power supply electric arc furnace, direct current power supply electric arc furnace has more stable and efficient characteristics, and is suitable for some specific smelting processes.

[0003] The products used in the market at present mainly include alternating current power supply electric arc furnace, low-frequency power supply electric arc furnace, single-electrode direct current power supply electric arc furnace and the like, the above-mentioned equipment can meet smelting requirements, but still have characteristics such as high power consumption, high investment cost, large operation difficulty and serious resource waste, and the waste gas generated by electric arc furnace often contains a large amount of particulate matter, especially in the combustion process of coal or other fuels.Particulate matter not only pollutes the air, but also causes equipment wear and tear. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a direct current electric arc furnace body to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a direct current electric arc furnace body, comprising a furnace shell, a furnace cover, a short net, a rectifier cabinet, an electrode, a feeding system, an annular trolley distribution, a clean flue gas chimney and a raw flue gas chimney, further comprising:

[0006] The furnace cover is arranged on the top of the furnace shell, the top of the furnace cover is provided with the electrode, the rectifier cabinet is fixed on the top of the furnace cover, the short net is arranged on one side of the rectifier cabinet, the feeding system is fixed on the top of the furnace cover, and the annular array is arranged on the surface of the electrode, the annular trolley distribution is arranged on the top of the feeding system, the clean flue gas chimney is arranged on one side of the top of the furnace cover, and the raw flue gas chimney is arranged on one side of the top of the furnace cover.

[0007] The extension plate is fixed on one side of the furnace shell, the top of the extension plate is fixedly connected with the purification shell, one side of the purification shell is communicated with the raw flue gas chimney, one side of the top of the purification shell is fixedly connected with the dismounting piece, the dismounting piece comprises a first inclined block and a pull plate, and one side of the inside of the purification shell is provided with a filter plate.

[0008] Preferably, the bottom of the extension plate is fixedly connected with a reinforcing block, and one side of the reinforcing block is fixedly connected with the furnace cover.

[0009] Preferably, one side of the purification shell is communicated with an exhaust pipe, and the bottom of one side of the purification shell is communicated with a liquid discharge pipe.

[0010] Preferably, the top of the inner cavity of the purification shell is communicated with a liquid inlet pipe, and the bottom of the liquid inlet pipe is communicated with a spray shell.

[0011] Preferably, the top and the bottom of one side of the inner part of the purification shell are fixedly connected with a partition plate for limiting the use of the filter plate, and the top of the filter plate is fixedly connected with a pull rod.

[0012] Preferably, the first inclined block is fixed on both sides of the top of the purification shell, the pull plate is slidingly connected to the top of the purification shell, the pull plate is fixedly connected with a first spring on both sides, the first spring is fixedly connected with a clamping plate on one side, the pull plate is fixedly connected with a limiting column on both sides, the limiting column is provided with a limiting frame for limiting the movement of the clamping plate on the surface, and the limiting frame is fixedly connected with the clamping plate on one side.

[0013] Preferably, the pull plate is fixedly connected with an extension rod on one side, the extension rod is provided with a limiting plate on the surface, the limiting plate is fixedly connected with the purification shell at the bottom, and the pull plate is fixedly connected with a second spring for assisting the reset of the pull plate on one side.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The furnace body equipment adopts four electrodes, each two electrodes correspond to a group of power supply, forms a circuit loop, two groups of electrodes are arranged symmetrically, selects reasonable interelectrode distance, forms reasonable smelting area, guarantees that the crucible area below each electrode is communicated, and the internal dead material area is not formed, guarantees that the tapping is smooth, the system designs a novel annular trolley distribution device, reduces the problems of disorderly arrangement and high safety risk, can realize real-time statistics of the distribution amount and distribution batch amount of each stock bin. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The utility model provides a structure schematic diagram of direct current electric arc furnace furnace body;

[0017] Figure 2 Another perspective structure schematic diagram provided by the utility model;

[0018] Figure 3 The utility model provides a filter shell cross section structure schematic diagram;

[0019] Figure 4 The utility model provides a dismounting piece structure schematic diagram.

[0020] In the figure: 1, furnace shell; 2, furnace cover; 3, short net; 4, rectifier cabinet; 5, electrode; 6, discharging system; 7, annular car distribution; 8, clean flue gas chimney; 9, raw flue gas chimney; 10, extension plate; 11, purification shell; 12, disassembling part; 1201, first inclined block; 1202, pull plate; 1203, first spring; 1204, clamping plate; 1205, limiting column; 1206, limiting frame; 1207, extension rod; 1208, limiting plate; 1209, second spring; 13, reinforcing block; 14, exhaust pipe; 15, liquid discharge pipe; 16, liquid inlet pipe; 17, spraying shell; 18, filter plate; 19, partition plate; 20, pull rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4 As shown in the figure, a direct current electric arc furnace body, here can write specification, including furnace shell 1, furnace cover 2, short net 3, rectifier cabinet 4, electrode 5, discharging system 6, annular car distribution 7, clean flue gas chimney 8 and raw flue gas chimney 9, further including:

[0023] Furnace cover 2 is arranged on the top of furnace shell 1, the top of furnace cover 2 is provided with electrode 5, rectifier cabinet 4 is fixed on the top of furnace cover 2, short net 3 is installed on one side of rectifier cabinet 4, discharging system 6 is fixed on the top of furnace cover 2, and is annularly arranged on the surface of electrode 5, annular car distribution 7 is installed on the top of discharging system 6, clean flue gas chimney 8 is installed on one side of the top of furnace cover 2, raw flue gas chimney 9 is installed on one side of the top of furnace cover 2, firstly, the system is powered by direct current, the power factor can be guaranteed to be above 0.92, solving the problem of low power grid utilization efficiency, through 35kV or 110kV switch station, the electricity is sent to the system voltage regulation variable primary line side, in turn through rectifier and rectifier cabinet 4, the electricity is sent to the equipment short net 3, the current flows through short net 3, electrode 5 vertical copper pipe and finally is introduced into the furnace, electric arc is generated between electrode 5, materials are arranged in discharging system 6 through the distribution system, are continuously introduced into the furnace through the material pipe, and the smelting of products is realized by reaching the temperature required by the reduction reaction of materials through electric arc heating.

[0024] The extension plate 10 fixed to one side of the furnace shell 1, the top of the extension plate 10 is fixedly connected with the purification shell 11, one side of the purification shell 11 is communicated with the raw smoke chimney 9, one side of the top of the purification shell 11 is fixedly connected with the dismounting piece 12, through the setting of the dismounting piece 12, the filter plate 18 is convenient to dismount, the dismounting piece 12 includes the first inclined block 1201 and the pull plate 1202, one side of the inside of the purification shell 11 is provided with the filter plate 18, through the filter plate 18, the impurities in the flue gas can be filtered.

[0025] The bottom of the extension plate 10 is fixedly connected with the reinforcing block 13, through the fixed connection of the reinforcing block 13 and the purification shell 11, the connection strength between the extension plate 10 and the furnace cover 2 can be improved, one side of the reinforcing block 13 is fixedly connected with the furnace cover 2, one side of the purification shell 11 is communicated with the smoke exhaust pipe 14, through the smoke exhaust pipe 14, the purified waste gas is convenient to discharge, the bottom of one side of the purification shell 11 is communicated with the liquid discharge pipe 15, through the liquid discharge pipe 15, the liquid sprayed is convenient to discharge, through the liquid inlet pipe 16, the water conveying pipeline with the water pump is communicated with the liquid inlet pipe 16, and the inside of the spray shell 17 is sprayed with the particles in the waste gas, the water spray system atomizes the water into fine water droplets, and the water droplets are contacted with the particulate matter in the waste gas. The water droplets are captured by collision, condensation and other effects, and the dust removal effect is achieved. Water spraying can not only capture particulate matter, but also reduce the temperature of waste gas and the concentration of harmful gas, the top of the inner cavity of the purification shell 11 is communicated with the liquid inlet pipe 16, the bottom of the liquid inlet pipe 16 is communicated with the spray shell 17, the top and the bottom of one side of the inside of the purification shell 11 are fixedly connected with the partition plate 19 for limiting the use of the filter plate 18, through the partition plate 19, the filter plate 18 is convenient to limit installation, the top of the filter plate 18 is fixedly connected with the pull rod 20, through the setting of the pull rod 20, the filter plate 18 is convenient to dismount.

[0026] The first inclined blocks 1201 are fixed on both sides of the top of the purification shell 11, the pull plate 1202 is slidingly connected to the top of the purification shell 11, both sides of the pull plate 1202 are fixedly connected with the first springs 1203, one side of the first spring 1203 is fixedly connected with the clamping plate 1204, both sides of the pull plate 1202 are fixedly connected with the limiting posts 1205, the surface of the limiting post 1205 is sleeved with the limiting frame 1206 for limiting the movement of the clamping plate 1204, one side of the limiting frame 1206 is fixedly connected with the clamping plate 1204, one side of the pull plate 1202 is fixedly connected with the extension rod 1207, when the user needs to disassemble the filter plate 18, the pull plate 1202 drives the limiting post 1205 and the first spring 1203 to press against the first inclined block 1201 in cooperation with the clamping plate 1204, at this time, the clamping plate 1204 is stressed to drive the limiting frame 1206 to limit the movement on the surface of the limiting post 1205, and the clamping plate 1204 gradually separates from the surface of the first inclined block 1201, at the same time, the pull plate 1202 drives the extension rod 1207 to limit the movement in the limiting plate 1208, and the second spring 1209 is extruded, until the clamping plate 1204 separates from the inside of the filter plate 18, the surface of the extension rod 1207 is sleeved with the limiting plate 1208, the bottom of the limiting plate 1208 is fixedly connected with the purification shell 11, the second spring 1209 for assisting the pull plate 1202 to reset is fixedly connected between one side of the pull plate 1202 and the limiting plate 1208.

[0027] Working principle: firstly, the system is powered by DC, the power factor can be guaranteed above 0.92, solve the problem of low efficiency of power grid, through 35kV or 110kV switch station to send the system to the voltage variable primary line side, in turn through the rectifier and rectifier cabinet 4, the electricity to the equipment short network 3, the current through the short network 3, electrode 5 vertical copper pipe finally into the furnace, electrode 5 between the arc, the material is arranged in the feeding system, 6, through the pipe continuously into the furnace, through the arc heating to achieve the temperature required for the reduction reaction of the material to realize the smelting of the product, and when the waste gas chimney 9 exhaust gas, the exhaust gas will enter the inside of the purification shell 11, and the water conveying pipeline with the liquid discharge pipe 15 is communicated, then cooperate with the spray shell 17 to spray the particles in the internal exhaust gas, the water spray system atomizes the water into fine droplets, which contacts with the particles in the exhaust gas. The water droplets capture the particles by collision, condensation and other effects, achieving dust removal effect. Water spraying not only can capture particles, but also can reduce the temperature of waste gas and reduce the concentration of harmful gas. At this time, the gas is filtered through the filter plate 18 and then discharged through the exhaust pipe 14. When the filter plate 18 is filtered to a certain extent and needs to be disassembled and maintained, pull the pull plate 1202 to drive the limiting column 1205 and the first spring 1203 to resist the first inclined block 1201 with the clamping plate 1204. At this time, the clamping plate 1204 is stressed to drive the limiting frame 1206 to limit the movement on the surface of the limiting column 1205, and make the clamping plate 1204 gradually separate from the surface of the first inclined block 1201. At the same time, the extension rod 1207 will be driven to move in the limiting plate 1208 when the pull plate 1202 moves, and the second spring 1209 will be extruded. Until the clamping plate 1204 is separated from the slot in the filter plate 18, the filter plate 18 can be pulled out for cleaning.

[0028] It should be noted that in this document, the terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply that these entities or actions exist in any actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the statement "including a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A direct current (DC) smelting furnace body comprising a furnace shell (1), a furnace cover (2), a short net (3), a rectifier cabinet (4), an electrode (5), a charging system (6), a circular trolley distribution (7), a clean flue gas stack (8) and a raw flue gas stack (9), characterized in that, Also include: The furnace cover (2) is arranged at the top of the furnace shell (1), the top of the furnace cover (2) is provided with an electrode (5), the rectifier cabinet (4) is fixed to the top of the furnace cover (2), the short net (3) is arranged on one side of the rectifier cabinet (4), the feeding system (6) is fixed to the top of the furnace cover (2), and the ring-shaped array is distributed on the surface of the electrode (5), the ring-shaped car cloth (7) is arranged on the top of the feeding system (6), the clean flue gas chimney (8) is arranged on one side of the top of the furnace cover (2), and the raw flue gas chimney (9) is arranged on one side of the top of the furnace cover (2); The extension plate (10) is fixed to one side of the furnace shell (1), the top of the extension plate (10) is fixedly connected with a purification shell (11), one side of the purification shell (11) is communicated with the raw flue gas chimney (9), one side of the top of the purification shell (11) is fixedly connected with a dismounting piece (12), the dismounting piece (12) comprises a first inclined block (1201) and a pull plate (1202), and one side of the inside of the purification shell (11) is provided with a filter plate (18).

2. A DC smelting furnace vessel as claimed in claim 1 wherein: The bottom of the extension plate (10) is fixedly connected with a reinforcing block (13), and one side of the reinforcing block (13) is fixedly connected with the furnace cover (2).

3. A DC smelting furnace vessel as claimed in claim 1 wherein: One side of the purification shell (11) is communicated with a smoke exhaust pipe (14), and the bottom of one side of the purification shell (11) is communicated with a liquid discharge pipe (15).

4. A DC smelting furnace vessel as claimed in claim 1 wherein: The top of the inner cavity of the purification shell (11) is communicated with a liquid inlet pipe (16), and the bottom of the liquid inlet pipe (16) is communicated with a spray shell (17).

5. A DC smelting furnace vessel as claimed in claim 1, characterised in that: The top and bottom of one side of the inside of the purification shell (11) are fixedly connected with a partition plate (19) for limiting the use of the filter plate (18), and the top of the filter plate (18) is fixedly connected with a pull rod (20).

6. A DC smelting furnace vessel as claimed in claim 1 wherein: The first inclined block (1201) is fixed to the top of the purification shell (11) on both sides, the pull plate (1202) is slidably connected to the top of the purification shell (11), the pull plate (1202) is fixedly connected with a first spring (1203) on both sides, the first spring (1203) is fixedly connected with a clamping plate (1204) on one side, the pull plate (1202) is fixedly connected with a limiting column (1205) on both sides, the surface of the limiting column (1205) is sleeved with a limiting frame (1206) for limiting the movement of the clamping plate (1204), and one side of the limiting frame (1206) is fixedly connected with the clamping plate (1204).

7. A DC smelting furnace vessel as claimed in claim 6 wherein: One side of the pull plate (1202) is fixedly connected with an extension rod (1207), the surface of the extension rod (1207) is sleeved with a limiting plate (1208), the bottom of the limiting plate (1208) is fixedly connected with the purification shell (11), and the second spring (1209) for assisting the pull plate (1202) to reset is fixedly connected between one side of the pull plate (1202) and the limiting plate (1208).

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