CN220853110U - Tilting discharging device of electric arc furnace - Google Patents

Abstract

The utility model discloses a tilting discharging device of an arc furnace, in particular to the technical field of metallurgical equipment, which comprises a furnace body, a tilting mechanism, an electrode lifting mechanism, a chute device and the like, wherein the tilting discharging device comprises the following components in percentage by weight: the horizontal rail of stove mechanism inclines is the channel-section steel structure of taking the turn-ups, and the horizontal rail is fixed by the set screw of both sides, and the indent forms the spacing groove in the middle part of arc track, but the spiral-lock of spacing groove rolling is on the channel-section steel, and a plurality of stop bolts are installed to the symmetry on the both sides horizontal turn-ups of arc track, and stop bolt can prevent effectively that the spacing groove from droing, and electrode elevating system adopts multilayer sleeve structure, can show the whole rocking that reduces in the lift process. Compared with the prior art, the furnace tilting mechanism and the electrode lifting mechanism of the structure are convenient to assemble and disassemble and reliable in operation, after molten steel is refined, the furnace tilting mechanism drives the furnace body to tilt forwards, molten steel flows into the chute below through the steel tapping hole, and the molten steel is transported into the steel ladle through the chute, so that the steel tapping safety and the production efficiency can be improved.

Description

Tilting discharging device of electric arc furnace

Technical Field

The utility model relates to the technical field of metallurgical equipment, in particular to a tilting discharging device of an electric arc furnace.

Background

In the existing steelmaking flow, a ramp and a ladle car are arranged on one side of a furnace body, the ladle car is matched with the furnace body to finish the transportation and transfer work of molten steel after steelmaking, the ladle car and a rail in the ramp can move back and forth after the ladle car and the ladle are assembled, when steelmaking is finished, the ladle car carries the ladle to reach a designated position at the edge of the furnace body, a tilting mechanism tilts the furnace body in the ramp to pour molten steel into the ladle, and after the tilting is finished, the ladle car transports the ladle to the designated position to perform the next flow.

In the smelting process, the furnace tilting mechanism, the tapping mechanism and the electrode lifting mechanism play an important role, and in the scheme of the existing furnace tilting mechanism, a mode of a hinged seat on one side, a hydraulic lifting cylinder on the other side or a hydraulic jacking cylinder on the other side is mostly adopted, and in the scheme, the hydraulic cylinder needs to overcome larger equipment dead weight to realize the tilting of a furnace body, so that the volume of a hydraulic system is overlarge; the ladle in the existing tapping mechanism needs to be transferred for multiple times, so that potential safety hazards exist; the existing electrode lifting mechanism adopts a structure that a hydraulic cylinder directly jacks up a transmission arm and an electrode cross arm, and the scheme is particularly obvious in the furnace tilting process because the transmission arm is overlong in the lifting process, and the whole shaking condition can be caused.

How to design a novel tilting discharging device of an electric arc furnace solves the technical problems and becomes a technical problem in the field.

Disclosure of utility model

In view of the above, the utility model provides a tilting discharging device of an electric arc furnace, which is convenient to assemble and disassemble and reliable in operation, and when molten steel is refined, the tilting mechanism drives a furnace body to tilt forwards, molten steel flows into a chute below through a steel tapping hole, and the molten steel is transported into a ladle through the chute, so that the device can improve the steel tapping safety and the production efficiency.

The utility model solves the problems by the following technical means:

the tilting discharging device of the arc furnace is characterized by comprising a furnace body, a tilting mechanism, a water-cooling furnace cover, an electrode lifting mechanism, a power supply unit and a chute device, wherein:

the furnace body is used for containing smelting raw materials, refractory materials are built in the furnace body, and the furnace body is fixed at the upper part of the furnace tilting mechanism;

The tilting mechanism comprises a tilting platform, arc-shaped tracks, tilting oil cylinders and horizontal tracks, wherein the tilting platform is a bearing frame, the two arc-shaped tracks are symmetrically arranged below the bearing frame, the tilting oil cylinders are arranged on one side of the tilting platform, telescopic rods of the tilting oil cylinders are connected with a rotating shaft seat on one side of the bottom of the tilting oil cylinders through rotating shafts, cylinder bodies of the tilting oil cylinders are hinged in the rotating shaft seat on the bottom of a sinking groove through rotating shafts, the horizontal tracks are arranged at the bottoms of the arc-shaped tracks, and telescopic movement of the tilting oil cylinders can drive the arc-shaped tracks to roll back and forth on the horizontal tracks so as to realize tilting of the tilting platform;

the water-cooling furnace cover is arranged on the furnace body and forms a closed heat insulator with the furnace body, a blanking opening and an electrode opening are formed above the water-cooling furnace cover, a telescopic blanking pipe is arranged in the blanking opening, and the electrode opening is used for installing a graphite electrode;

The electrode lifting mechanism is arranged on the furnace tilting mechanism and can adjust the height of the electrode;

The power supply unit comprises a water-cooling cable, a short net and a transformer and is used for supplying power to the electrode;

the chute device is arranged at the lower side of the tapping hole of the furnace body and is used for guiding molten steel into the ladle.

Preferably, the horizontal track is a channel steel structure with flanging, the horizontal track is fixed by positioning screws on two sides, a limiting groove is formed in the middle of the arc track in a concave mode, the limiting groove can be buckled on the channel steel in a rolling mode, and a plurality of limiting bolts are symmetrically installed on the horizontal flanging on two sides of the arc track.

Preferably, the electrode elevating system includes electrode xarm, electrode clamp, heating electrode, insulating connecting seat, lift outer tube, gyro wheel guide holder, lift inner tube, connection hole, connecting axle, connection outer hole, connection platform, lift cylinder and bracket, wherein:

One end of the electrode cross arm is provided with an electrode clamp which is used for fixing a heating electrode, and the bottom of the other end of the electrode cross arm is provided with an insulating connecting seat;

The top of the lifting outer tube is fixedly connected with the insulating connecting seat, the outer wall of the lifting outer tube is sleeved in the roller guide seat, the roller guide seat is of a sleeve structure with rollers at two ends, and four guide rollers are respectively arranged at two ends of the roller guide seat;

The lifting inner pipe is arranged in the lifting outer pipe, a connecting inner hole is formed in the top of the lifting inner pipe, a connecting shaft is arranged between the connecting inner hole of the lifting inner pipe and the connecting outer hole of the lifting outer pipe, and the bottom of the lifting inner pipe is connected with a telescopic rod of the lifting oil cylinder through a connecting table;

the cylinder body of the lifting cylinder is fixedly connected to the furnace tilting mechanism through a bracket;

the lifting or lowering of the lifting oil cylinder telescopic rod can drive the lifting inner tube, the lifting outer tube, the insulating connecting seat, the electrode cross arm, the electrode clamp and the heating electrode to move up and down in sequence.

The tilting discharging device of the electric arc furnace has the following beneficial effects:

the equipment comprises a furnace body, a furnace tilting mechanism, an electrode lifting mechanism, a chute device and the like, wherein:

1) The horizontal rail of this stove mechanism of inclining is taking the channel-section steel structure of turn-ups, and the horizontal rail is fixed by the set screw of both sides, and the indent forms the spacing groove in the middle part of arc track, but the rolling spiral-lock of spacing groove is on the channel-section steel, and a plurality of stop bolts are installed to symmetry on the horizontal turn-ups of both sides of arc track, and stop bolt can prevent effectively that the spacing groove from droing, wherein: the depth of the limit groove, the height of the limit bolt and the diameter of the nut can be flexibly adjusted, when the furnace body is heavy and needs to swing to tapping greatly, the derailment risk is increased, at the moment, the height of the limit bolt and the diameter of the nut can be properly increased, and a gap of 1-2cm exists between the outer wall of the nut at the bottom of the limit bolt and the outer wall of the horizontal rail.

2) This electrode elevating system adopts multilayer sleeve structure, because the outer wall of lift outer tube is spacing by the gyro wheel guide holder, and the inside at the lift outer tube is installed to the lift inner tube and is interconnected through the connecting axle, and at this moment, in the elevating movement, compare with current long transfer line structure, inside and outside sleeve structure can show to reduce whole rocking, makes it can guarantee good straightness and peace in the altitude mixture control in-process, especially inclines the stove in-process, and this scheme has good rigidity, can effectively avoid inside part relative motion.

3) The chute device is arranged at the lower side of the steel outlet of the furnace body, the chute device is used for guiding molten steel into the steel ladle, when the molten steel is refined, the furnace tilting mechanism drives the furnace body to tilt forwards, the molten steel flows into the chute below through the steel outlet, and the molten steel is transported into the steel ladle through the chute.

Drawings

The utility model is further described below with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a tilting platform structure according to the present utility model;

FIG. 3 is a schematic view of the track fit of the present utility model;

FIG. 4 is a schematic view of the water-cooled furnace cover structure of the utility model;

FIG. 5 is a schematic view of an electrode lifting mechanism installation of the present utility model;

FIG. 6 is an overall schematic of the lifting mechanism of the conductive electrode of the present utility model;

Fig. 7 is a schematic view of the structure of the lifting inner tube of the present utility model.

In the figure, a 1-furnace body, a 2-furnace tilting mechanism, a 201-tilting platform, a 202-arc-shaped track, a 203-tilting cylinder, a 204-horizontal track, 205-positioning screws, 206-limiting grooves, 207-limiting bolts, a 3-water-cooled furnace cover, a 301-blanking opening, a 302-electrode opening, a 303-blanking pipe, a 4-electrode lifting mechanism, a 401-electrode cross arm, a 402-electrode clamp, a 403-heating electrode, a 404-lifting base, a 405-lifting outer pipe, a 406-roller guide seat, a 407-connecting inner hole, a 408-connecting shaft, a 409-connecting outer hole, a 410-connecting table, a 411-lifting cylinder, 412-brackets, a 413-lifting inner pipe, a 5-power supply unit and a 6-chute device.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and 7, the tilting discharging device of the arc furnace comprises a furnace body 1, a tilting mechanism 2, a water-cooled furnace cover 3, an electrode lifting mechanism 4, a power supply unit 5 and a chute device 6, wherein in the drawing, the furnace body 1 is used for containing smelting raw materials, refractory materials are built in the furnace body 1, the furnace body 1 is fixed on the upper part of the tilting mechanism 2, the water-cooled furnace cover 3 is arranged on the furnace body 1 and forms a closed heat insulator with the furnace body 1, a discharging opening 301 and an electrode opening 302 are formed above the water-cooled furnace cover 3, a telescopic discharging pipe 303 is arranged in the discharging opening 301, the electrode opening 302 is used for installing a graphite electrode, and the tilting mechanism 2 can drive the furnace body 1, the water-cooled furnace cover 3 and the electrode lifting mechanism 4 to incline synchronously.

In this embodiment, the tilting mechanism 2 includes a tilting platform 201, an arc track 202, a tilting cylinder 203 and a horizontal track 204, where the tilting platform 201 is a bearing frame, the two arc tracks 202 are symmetrically installed under the bearing frame, the tilting cylinder 203 is disposed on one side of the tilting platform 201, a telescopic rod of the tilting cylinder 203 is connected with a rotating shaft seat on one side of the bottom of the tilting cylinder 203 through a rotating shaft, a cylinder body of the tilting cylinder 203 is hinged in the rotating shaft seat on the bottom of the sinking tank through the rotating shaft, the horizontal track 204 is installed at the bottom of the arc track 202, and the telescopic movement of the tilting cylinder 203 can drive the arc track 202 to roll back and forth on the horizontal track 204 so as to tilt the tilting platform 201.

In the figure, the horizontal rail 204 is a channel steel structure with flanges, the horizontal rail 204 is fixed by positioning screws 205 at two sides, a limiting groove 206 is formed in the middle of the arc-shaped rail 202 in a concave manner, the limiting groove 206 is buckled on the channel steel in a rolling manner, and a plurality of limiting bolts 207 are symmetrically arranged on the horizontal flanges at two sides of the arc-shaped rail 202.

During actual operation, the horizontal track of this stove mechanism of inclining is the channel-section steel structure of taking the turn-ups, and the horizontal track is fixed by the set screw of both sides, and the indent forms the spacing groove in the middle part of arc track, but the rolling spiral-lock of spacing groove is on the channel-section steel, and a plurality of stop bolts are installed to symmetry on the horizontal turn-ups of both sides of arc track, and stop bolt can prevent effectively that the spacing groove from droing, wherein: the depth of the limit groove, the height of the limit bolt and the diameter of the nut can be flexibly adjusted, when the furnace body is heavy and needs to swing to tapping greatly, the derailment risk is increased, at the moment, the height of the limit bolt and the diameter of the nut can be properly increased, and a gap of 1-2cm exists between the outer wall of the nut at the bottom of the limit bolt and the outer wall of the horizontal rail.

In the drawing, a chute device 6 is provided at the lower side of the tap hole of the furnace body 1, and the chute device 6 is used for guiding molten steel into a ladle. Specifically, this chute device sets up in the steel-tapping hole downside of furnace body, and chute device is used for guiding the molten steel to in the ladle, and after the molten steel accomplished the refining, the stove mechanism of inclining drives the furnace body and leans forward, and the molten steel flows into the chute of below through the steel-tapping hole, and the molten steel passes through the chute transportation to in the ladle, and the device can promote steel-tapping security and production efficiency, reduces ladle transportation number of times.

In the figure, the power supply unit 5 comprises a water-cooled cable, a short net and a transformer, wherein the power supply unit 5 is used for supplying power to the electrode, and the water-cooled cable, the short net and the transformer all adopt the existing equipment.

In the drawing, the electrode lifting mechanism 4 includes an electrode cross arm 401, an electrode clip 402, a heating electrode 403, an insulating connecting seat 404, a lifting outer tube 405, a roller guide seat 406, a lifting inner tube 413, a connecting inner hole 407, a connecting shaft 408, a connecting outer hole 409, a connecting table 410, a lifting cylinder 411 and a bracket 412, wherein: one end of the electrode cross arm 401 is provided with an electrode clamp 402, the electrode clamp 402 is used for fixing a heating electrode 403, and the bottom of the other end of the electrode cross arm 401 is provided with an insulating connecting seat 404; the top of the lifting outer tube 405 is fixedly connected with an insulating connecting seat 404, the outer wall of the lifting outer tube 405 is sleeved in a roller guide seat 406, the roller guide seat 406 is of a sleeve structure with rollers at two ends, and four guide rollers are respectively arranged at two ends of the roller guide seat 406; the lifting inner tube 413 is arranged in the lifting outer tube 405, a connecting inner hole 407 is formed in the top of the lifting inner tube 413, a connecting shaft 408 is arranged between the connecting inner hole 407 of the lifting inner tube 413 and the connecting outer hole 409 of the lifting outer tube 405, and the bottom of the lifting inner tube 413 is connected with a telescopic rod of the lifting oil cylinder 411 through a connecting table 410; the cylinder body of the lifting cylinder 411 is fixedly connected to the furnace tilting mechanism 2 through a bracket 412.

In specific work, the lifting or lowering of the telescopic rod of the lifting cylinder 411 can drive the lifting inner pipe 413, the lifting outer pipe 405, the insulating connecting seat 404, the electrode cross arm 401, the electrode clamp 402 and the heating electrode 403 to move up and down in sequence.

In this embodiment, electrode elevating system adopts multilayer sleeve structure, because the outer wall of lift outer tube is spacing by the gyro wheel guide holder, and the lift inner tube is installed in the inside of lift outer tube and is interconnected through the connecting axle, and at this moment, in the elevating movement, compare with current long transfer line structure, inside and outside sleeve pipe structure can show to reduce whole rocking, makes it can guarantee good straightness that hangs down and peace in the altitude mixture control in-process, especially inclines the stove in-process, and this scheme has good rigidity, can effectively avoid interior part relative motion.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (3)

1. The utility model provides an electric arc furnace tilting discharging device which characterized in that, includes furnace body (1), tilting mechanism (2), water-cooling bell (3), electrode elevating system (4), power supply unit (5) and chute device (6), wherein:

the furnace body (1) is used for containing smelting raw materials, refractory materials are built in the furnace body (1), and the furnace body (1) is fixed on the upper part of the furnace tilting mechanism (2);

The tilting furnace mechanism (2) comprises a tilting platform (201), arc-shaped tracks (202), tilting oil cylinders (203) and a horizontal track (204), wherein the tilting platform (201) is a bearing frame, the two arc-shaped tracks (202) are symmetrically arranged below the bearing frame, the tilting oil cylinders (203) are arranged on one side of the tilting platform (201), telescopic rods of the tilting oil cylinders (203) are connected with a rotating shaft seat on one side of the bottom of the tilting oil cylinders (203) through rotating shafts, a cylinder body of the tilting oil cylinders (203) is hinged in the rotating shaft seat on the bottom of a sinking groove through rotating shafts, the horizontal track (204) is arranged at the bottom of the arc-shaped track (202), and telescopic movement of the tilting oil cylinders (203) can drive the arc-shaped track (202) to roll back and forth on the horizontal track (204) so as to tilt the tilting platform (201);

the water-cooling furnace cover (3) is arranged on the furnace body (1) and forms a closed heat insulator with the furnace body (1), a blanking opening (301) and an electrode opening (302) are formed above the water-cooling furnace cover (3), a telescopic blanking pipe (303) is arranged in the blanking opening (301), and the electrode opening (302) is used for installing a graphite electrode;

the electrode lifting mechanism (4) is arranged on the furnace tilting mechanism (2), and the electrode lifting mechanism (4) can adjust the height of the electrode;

The power supply unit (5) comprises a water-cooled cable, a short net and a transformer, and the power supply unit (5) is used for supplying power to the electrode;

the chute device (6) is arranged at the lower side of the steel outlet of the furnace body (1), and the chute device (6) is used for guiding molten steel into the steel ladle.

2. The tilting discharge device of the arc furnace according to claim 1, wherein the horizontal rail (204) is of a channel steel structure with flanging, the horizontal rail (204) is fixed by positioning screws (205) at two sides, a limiting groove (206) is formed in the middle of the arc rail (202) in a concave manner, the limiting groove (206) is rotatably buckled on the channel steel, and a plurality of limiting bolts (207) are symmetrically arranged on the two sides of the arc rail (202) on the horizontal flanging.

3. The arc furnace tilting discharge device according to claim 1, wherein the electrode lifting mechanism (4) comprises an electrode cross arm (401), an electrode clip (402), a heating electrode (403), an insulating connecting seat (404), a lifting outer tube (405), a roller guide seat (406), a lifting inner tube (413), a connecting inner hole (407), a connecting shaft (408), a connecting outer hole (409), a connecting table (410), a lifting oil cylinder (411) and a bracket (412), wherein:

One end of the electrode cross arm (401) is provided with an electrode clamp (402), the electrode clamp (402) is used for fixing a heating electrode (403), and an insulating connecting seat (404) is arranged at the bottom of the other end of the electrode cross arm (401);

The top of the lifting outer tube (405) is fixedly connected with the insulating connecting seat (404), the outer wall of the lifting outer tube (405) is sleeved in the roller guide seat (406), the roller guide seat (406) is of a sleeve structure with rollers at two ends, and four guide rollers are respectively arranged at two ends of the roller guide seat (406);

The lifting inner tube (413) is arranged in the lifting outer tube (405), a connecting inner hole (407) is formed in the top of the lifting inner tube (413), a connecting shaft (408) is arranged between the connecting inner hole (407) of the lifting inner tube (413) and the connecting outer hole (409) of the lifting outer tube (405), and the bottom of the lifting inner tube (413) is connected with a telescopic rod of the lifting oil cylinder (411) through a connecting table (410);

the cylinder body of the lifting cylinder (411) is fixedly connected to the furnace tilting mechanism (2) through a bracket (412);

lifting or lowering of the telescopic rod of the lifting oil cylinder (411) can drive the lifting inner tube (413), the lifting outer tube (405), the insulating connecting seat (404), the electrode cross arm (401), the electrode clamp (402) and the heating electrode (403) to move up and down in sequence.