CN212620035U - Electric arc furnace - Google Patents

Electric arc furnace Download PDF

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Publication number
CN212620035U
CN212620035U CN202021259719.4U CN202021259719U CN212620035U CN 212620035 U CN212620035 U CN 212620035U CN 202021259719 U CN202021259719 U CN 202021259719U CN 212620035 U CN212620035 U CN 212620035U
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CN
China
Prior art keywords
feeding
furnace
electric arc
furnace body
screw
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CN202021259719.4U
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Chinese (zh)
Inventor
李少梅
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Zhengzhou Chengyue Scientific Instrument Co ltd
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Zhengzhou Chengyue Scientific Instrument Co ltd
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Abstract

The utility model provides an electric arc furnace relates to the electric arc furnace field. The electric arc furnace comprises a furnace body, a furnace cover and an electrode, wherein a liquid outlet is formed in the furnace body, a feeding hole is formed in the furnace cover, and a feeding screw mechanism is installed at the feeding hole; the feeding screw mechanism comprises a feeding cylinder fixed on the outer side of the furnace cover and a screw feeding structure rotatably installed in the feeding cylinder, the screw feeding structure is further in transmission connection with a feeding motor, a feeding hopper is communicated with the end part, far away from the feeding port, of the feeding cylinder, and the feeding hopper is in a closed-up shape from top to bottom. If the raw materials are continuously added into the furnace body, the materials are firstly stored in the feed hopper, and then the feed motor is started to drive the spiral feed structure to convey the materials, so that the materials are conveyed into the furnace body to finish continuous addition; in the whole adding process, the furnace cover does not need to be opened, so that the relative sealing of the smelting in the furnace is ensured, the safety of smelting production is improved, the adding amount of raw materials is more accurate and controllable, the control process of feeding is simpler, and the smelting production process realizes continuous operation.

Description

Electric arc furnace
Technical Field
The utility model relates to an electric arc furnace technical field especially relates to an electric arc furnace.
Background
In the metal industry, an electric arc furnace is commonly used for metallurgical production, and the electric arc furnace is an electric furnace for smelting ores and metals at high temperature by utilizing electrode arc and has the advantages of high electric arc heating temperature, energy concentration and the like.
If the utility model discloses a chinese utility model patent that the bulletin number is CN210636023U, the bulletin day of the authorization is 2020.05.29 discloses an electric arc furnace for smelting steel scrap, and specifically disclose this electric arc furnace and include the furnace body, the top joint of furnace body is equipped with the lid, the bottom bolted connection of furnace body is equipped with the high temperature pond, run through on the lid and be provided with the electrode, and the quantity of electrode is three, the bottom of three electrodes all extends to the inside of furnace body, the bottom below in high temperature pond is equipped with the base, the bottom bolted connection arc film in high temperature pond, the base level sets up, its top central authorities articulate and are equipped with the butt joint piece, its top one side is articulated to be equipped with first cylinder, bolted connection is fixed between butt joint piece and the. When pouring the molten steel, the pouring angle of the furnace body can be accurately controlled through the telescopic action of the first cylinder, and the flow size and the speed of the molten steel can be conveniently controlled.
When the electric arc furnace for smelting scrap steel in the prior art is used, the scrap steel can be poured out and discharged after being smelted into molten steel, however, if smelting raw materials are added into the furnace body, the cover body needs to be opened, the upper part of the inner cavity of the whole furnace body is opened so that the smelting raw materials fall into the furnace body, the charging control process is complicated, and the smelting production process cannot be continuously operated.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims to provide an electric arc furnace to solve if add in to the furnace body and smelt the raw materials then need open the lid, make the inner chamber upper portion of whole furnace body open so that smelt the raw materials and fall into wherein, reinforced control process is loaded down with trivial details, smelts the unable continuous operation's of production technology problem.
The technical proposal of the electric arc furnace of the utility model is that:
the electric arc furnace comprises a furnace body, a furnace cover and an electrode penetrating through the furnace cover, wherein a liquid outlet is formed in the furnace body, a feeding hole is formed in the furnace cover, and a feeding screw mechanism is installed at the feeding hole;
the feeding screw mechanism comprises a feeding cylinder fixed on the outer side of the furnace cover and a screw feeding structure installed in the feeding cylinder in a rotating mode, the screw feeding structure is connected with a feeding motor in a transmission mode, the feeding cylinder is far away from the end portion of the feeding port, the end portion of the feeding port is communicated with a feeding hopper, and the feeding hopper is in a closed opening shape from top to bottom.
Furthermore, the feeding cylinder is a feeding cylinder which extends horizontally, the spiral feeding structure comprises a main shaft and a spiral feeding piece, the spiral feeding piece is fixed on the main shaft, and the spiral feeding piece is in clearance fit with the inner wall of the feeding cylinder.
Furthermore, a reduction gear set is connected between the feeding motor and the main shaft in a transmission manner.
Furthermore, a heat insulation lining layer is arranged outside the furnace cover and is arranged between the furnace cover and the feeding motor.
Further, the outside of furnace body is equipped with the mounting bracket, be equipped with the vertical guide rail of vertical extension on the mounting bracket, bell slidable mounting be in on the vertical guide rail, just the bell with be equipped with the lift driving piece between the vertical guide rail.
Furthermore, a liquid discharge nozzle which extends outwards and upwards in an inclined manner is arranged at the liquid discharge opening, and a V-shaped liquid discharge flow channel is arranged in the liquid discharge nozzle.
Further, an arc-shaped supporting plate is installed on the lower portion of the furnace body, a guiding flat plate is arranged on the lower side of the arc-shaped supporting plate, the arc-shaped supporting plate is assembled on the guiding flat plate in a rolling mode, and a telescopic driving piece is further connected to the furnace body.
Further, the bottom of the furnace body is a concave furnace bottom with a concave middle part, the concave furnace bottom is provided with an emptying port, and the emptying port is provided with an emptying valve.
Has the advantages that: when the device is used, the raw materials are melted into molten metal by utilizing the phenomenon of electric arc generated between the electrodes, if the raw materials are required to be continuously added into the furnace body, the materials are firstly stored in the feed hopper, and then the feed motor is started to drive the spiral feed structure to convey the materials, so that the materials are conveyed into the furnace body to finish continuous addition; in the whole adding process, the furnace cover does not need to be opened, so that the relative sealing of the smelting in the furnace is ensured, the safety of smelting production is improved, and the adding amount of the raw materials is more accurate and controllable. In addition, the condition that the inner cavity of the furnace body is completely opened by opening the furnace cover is avoided, so that smelting raw materials can conveniently fall into the furnace body, the control process of feeding is simpler, and the smelting production process realizes continuous operation.
Drawings
FIG. 1 is a schematic front view of an electric arc furnace according to an embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a feed screw mechanism according to embodiment 1 of the electric arc furnace of the present invention.
In the figure: 1-furnace body, 10-mounting frame, 11-liquid discharge nozzle, 12-lifting driving member, 13-sliding sleeve, 14-arc supporting plate, 15-guide flat plate, 16-telescopic driving member, 17-emptying valve, 2-furnace cover, 20-feeding hole, 21-heat insulation lining layer, 3-electrode, 4-feeding screw mechanism, 40-feeding cylinder, 41-main shaft, 42-screw feeding piece, 43-feeding motor and 44-feeding hopper.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the embodiment 1 of the electric arc furnace of the present invention, as shown in fig. 1 and 2, the electric arc furnace includes a furnace body 1, a furnace cover 2, and an electrode 3 penetrating through the furnace cover 2, wherein the furnace body 1 is provided with a liquid outlet, the furnace cover 2 is provided with a feed inlet 20, and a feed screw mechanism 4 is installed at the feed inlet 20; the feeding screw mechanism 4 comprises a feeding cylinder 40 fixed on the outer side of the furnace cover 2 and a screw feeding structure rotatably installed in the feeding cylinder 40, the screw feeding structure is further in transmission connection with a feeding motor 43, the end part, far away from the feeding hole 20, of the feeding cylinder 40 is communicated with a feeding hopper 44, and the feeding hopper 44 is in a closed shape from top to bottom.
When the device is used, the raw materials are melted into molten metal by utilizing the phenomenon of electric arc generated between the electrodes 3, if the raw materials are required to be continuously added into the furnace body 1, the materials are firstly stored in the feed hopper 44, and then the feed motor 43 is started to drive the spiral feed structure to convey the materials, so that the materials are conveyed into the furnace body 1 to finish continuous addition; in the whole adding process, the furnace cover 2 does not need to be opened, so that the relative sealing of smelting in the furnace is ensured, the safety of smelting production is improved, and the adding amount of raw materials is more accurate and controllable. In addition, the condition that the inner cavity of the furnace body is completely opened by opening the furnace cover is avoided, so that smelting raw materials can conveniently fall into the furnace body, the control process of feeding is simpler, and the smelting production process realizes continuous operation.
In this embodiment, the feeding cylinder 40 is a horizontally extending feeding cylinder, the spiral feeding structure includes a main shaft 41 and a spiral feeding piece 42, the spiral feeding piece 42 is fixed on the mounting main shaft 41, and the spiral feeding piece 42 is in clearance fit with the inner wall of the feeding cylinder. Furthermore, a reduction gear set is connected between the feeding motor 43 and the main shaft 41 of the feeding screw mechanism 4 in a transmission manner. By adopting the spiral feeding structure combining the main shaft 41 and the spiral material feeding sheet 42, the rotation motion of the main shaft 41 can be effectively converted into the horizontal conveying motion, so that the raw material is conveyed from the feed hopper 44 side to the feed inlet 20 side along the horizontal extending direction of the feed cylinder 40.
In order to avoid ablation damage to the feeding screw mechanism 4 caused by high-temperature heat inside the furnace body 1, a heat insulation lining layer 21 is arranged outside the furnace cover 2, and the heat insulation lining layer 21 is arranged between the furnace cover 2 and the feeding motor 43. Specifically, the heat insulation lining layer 21 is made of ceramic fiber materials, is also called nano microporous heat insulation materials, has extremely low heat conductivity coefficient, good chemical stability and thermal stability, can effectively prevent high-temperature heat in the furnace from being transferred to the outside of the furnace cover 2, and plays a role in heat insulation and protection for the feeding screw mechanism 4 outside the furnace cover 2.
Moreover, the furnace body 1 is provided with a mounting frame 10 on the outside, the mounting frame 10 is provided with a vertical guide rail extending vertically, the furnace cover 2 is slidably mounted on the vertical guide rail of the mounting frame 10, and a lifting driving member 12 is arranged between the furnace cover 2 and the vertical guide rail of the mounting frame 10. A sliding sleeve 13 is slidably arranged on the vertical guide rail, the furnace cover 2 is fixedly connected with the sliding sleeve 13, and the sliding sleeve 13 and the furnace cover 2 are driven to move up and down by a lifting driving piece 12, so that the process of opening and closing the furnace cover 2 is controlled.
A liquid discharge nozzle 11 which extends outwards and upwards is arranged at the liquid discharge opening of the furnace body 1, and a V-shaped liquid discharge flow passage is arranged in the liquid discharge nozzle 11. An arc-shaped supporting plate 14 is arranged at the lower part of the furnace body 1, a guiding flat plate 15 is arranged at the lower side of the arc-shaped supporting plate 14, the arc-shaped supporting plate 14 is assembled on the guiding flat plate 15 in a rolling way, and a telescopic driving piece 16 is also connected to the furnace body 1. The liquid discharge nozzle 11 is arranged in the middle, the arc-shaped supporting plates 14 are arranged on two sides, and the liquid discharge nozzle 11 and the arc-shaped supporting plates 14 are distributed in a staggered mode, so that the requirements of discharging molten metal and guiding the furnace body 1 to obliquely swing are met. The V-shaped liquid drainage flow channel of the liquid drainage nozzle 11 is communicated with the smelting space in the furnace body 1, the whole furnace body 1 can be driven to incline outwards by the telescopic driving piece 16, and when the furnace body 1 inclines to a certain angle, the molten steel in the furnace flows into the V-shaped liquid drainage flow channel of the liquid drainage nozzle 11 along the same trend, so that the molten steel is discharged outwards.
In addition, in order to completely evacuate the slag in the furnace body 1, the bottom of the furnace body 1 is designed into a concave furnace bottom with a concave middle part, a drainage port is arranged on the concave furnace bottom of the furnace body 1, and a drainage valve 17 is arranged at the drainage port. By opening the emptying valve 17, the slag accumulated in the concave furnace bottom of the furnace body 1 can be directly discharged outside, and the problem of residual slag in the furnace caused by incomplete dumping is avoided.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (8)

1. An electric arc furnace is characterized by comprising a furnace body, a furnace cover and an electrode penetrating through the furnace cover, wherein a liquid outlet is formed in the furnace body, a feeding hole is formed in the furnace cover, and a feeding screw mechanism is installed at the feeding hole;
the feeding screw mechanism comprises a feeding cylinder fixed on the outer side of the furnace cover and a screw feeding structure installed in the feeding cylinder in a rotating mode, the screw feeding structure is connected with a feeding motor in a transmission mode, the feeding cylinder is far away from the end portion of the feeding port, the end portion of the feeding port is communicated with a feeding hopper, and the feeding hopper is in a closed opening shape from top to bottom.
2. The electric arc furnace of claim 1 wherein the feed drum is a horizontally extending feed cylinder, the screw feeder structure includes a main shaft and a screw blade, the screw blade is fixedly mounted to the main shaft, and the screw blade is in clearance fit with an inner wall of the feed cylinder.
3. The electric arc furnace of claim 2 wherein a reduction gear set is drivingly connected between the feed motor and the main shaft.
4. The electric arc furnace of claim 3 wherein a thermal insulating lining is disposed on the exterior of the furnace roof and is interposed between the furnace roof and the feed motor.
5. The electric arc furnace of claim 1, wherein a mounting frame is provided on the exterior of the furnace body, wherein a vertically extending vertical rail is provided on the mounting frame, the furnace lid is slidably mounted on the vertical rail, and wherein a lifting drive member is provided between the furnace lid and the vertical rail.
6. The electric arc furnace of claim 1 wherein the tapping spout is provided with a tapping spout extending obliquely upwards and having a V-shaped tapping channel therein.
7. The electric arc furnace as claimed in claim 6, wherein an arc support plate is mounted on the lower portion of the furnace body, a guide plate is provided on the lower side of the arc support plate, the arc support plate is roll-fitted on the guide plate, and a telescopic driving member is further connected to the furnace body.
8. The electric arc furnace of claim 7 wherein the bottom of the furnace body is a concave bottom with a concave center, the concave bottom is provided with an evacuation port, and an evacuation valve is installed at the evacuation port.
CN202021259719.4U 2020-07-01 2020-07-01 Electric arc furnace Active CN212620035U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021259719.4U CN212620035U (en) 2020-07-01 2020-07-01 Electric arc furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021259719.4U CN212620035U (en) 2020-07-01 2020-07-01 Electric arc furnace

Publications (1)

Publication Number Publication Date
CN212620035U true CN212620035U (en) 2021-02-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021259719.4U Active CN212620035U (en) 2020-07-01 2020-07-01 Electric arc furnace

Country Status (1)

Country Link
CN (1) CN212620035U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113001838A (en) * 2021-03-02 2021-06-22 南丰县乾泰再生资源回收利用有限公司 Even heating device to polyester chip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113001838A (en) * 2021-03-02 2021-06-22 南丰县乾泰再生资源回收利用有限公司 Even heating device to polyester chip
CN113001838B (en) * 2021-03-02 2022-10-11 南丰县乾泰再生资源回收利用有限公司 Even heating device to polyester chip

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