CN212658061U

CN212658061U - Ladle refining furnace

Info

Publication number: CN212658061U
Application number: CN202021150837.1U
Authority: CN
Inventors: 杨伟标; 蔡飞均; 陈有斗
Original assignee: Zhejiang Friendship New Material Co Ltd
Current assignee: Zhejiang Friendship New Material Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-03-05
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to a ladle refining furnace, its technical scheme main points are that articulated mounting includes transformer transportation flatcar, electrode elevating gear, bed frame, locates bell hoist mechanism, ladle turret on the bed frame, locates ladle on the ladle turret, locates the water-cooled cover on the ladle and locates the dust removal pipeline who communicates with the water-cooled cover, the water-cooled cover includes the furnace mantle that forms through a plurality of cooling ring shape pipe welding, locates the charge-in pipeline on the furnace mantle and locates the smoke absorption hood at furnace mantle bottom edge, smoke absorption pipeline and dust removal pipeline intercommunication, just be equipped with the flow valve on the smoke absorption pipeline. The utility model has the advantages of effectively preventing the leakage of smoke and effectively processing the leakage of smoke.

Description

Ladle refining furnace

Technical Field

The utility model relates to a metallurgical refining technical field, more specifically the saying so, it relates to a ladle refining furnace.

Background

The water-cooled furnace cover is one of important devices in a 50-ton LF refining system, is mainly used for collecting smoke dust generated in the smelting process of the ladle refining furnace, is pumped out through a ventilation and dust removal system, and then is purified and dedusted so as to protect the environment, minimize the contact between the atmosphere and molten steel and maintain the optimal reducing atmosphere in the furnace. The existing water-cooled furnace cover is easy to leak smoke, and has no corresponding treatment means for leaked smoke, so that the air quality in the whole factory is poor, and the physical health of workers is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide a ladle refining furnace who effectively prevents to leak cigarette, effective processing and leak cigarette.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides an articulated mounting of ladle refining furnace includes transformer transportation flatcar, electrode elevating gear, bed frame, locates bell hoist mechanism on the bed frame, ladle revolving platform, locates the ladle on the ladle revolving platform, locates the water-cooled furnace lid on the ladle and locates the dust removal pipeline who communicates with the water-cooled furnace lid, the water-cooled furnace lid includes the furnace mantle that forms through a plurality of cooling ring pipe welding, locates the charge-in pipeline on the furnace mantle and locates the petticoat pipe at furnace mantle bottom edge, petticoat pipe and dust removal pipeline intercommunication, just be equipped with the flow valve on the petticoat pipe.

The working principle is as follows: in the production process, after the water-cooled furnace cover covers the ladle, the flue gas generated in the ladle can be absorbed by the dust removal channel for the most part, the flue gas leaked from a gap between the ladle and the water-cooled furnace cover for the small part can be absorbed by the smoke absorption cover, and the flue gas of the small part is sent into the dust removal pipeline, so that the smoke leakage can be effectively prevented, the air pollution in a factory is effectively reduced, and the smoke absorption cover is further provided with a flow valve which can conveniently control the flow between the smoke absorption channel and the dust removal pipeline.

Further, the furnace cover comprises a top cover, a cover body fixedly connected with the top cover and a sealing section arranged at the bottom of the cover body, and a section of step is arranged between the sealing section and the cover body.

Furthermore, the tail end of each cooling annular pipe is provided with a stop valve.

Furthermore, the inner wall of the water-cooled furnace cover is filled and leveled through welding.

Further, the outer lane of seal section is located to the smoke absorption hood, just the smoke absorption hood is and opens the form.

Furthermore, one surface of the smoke suction hood facing the inner side is provided with a plurality of smoke suction holes which are uniformly and densely distributed.

Furthermore, a water cooling pipeline is arranged in the smoke suction hood.

Further, the diameter of the smoking hole is at least larger than 1 cm.

Furthermore, the ladle turret comprises a base, a driving motor and ladle mounting seats, wherein the driving motor is used for driving the base to rotate, the ladle mounting seats are arranged at two ends of the base, and the ladle is arranged on the ladle mounting seats.

Furthermore, a driving mechanism for driving the steel ladle to turn over on the steel ladle mounting seat is further arranged on the steel ladle mounting seat, and the driving mechanism comprises a first rocker arm rotatably connected with the bottom of the steel ladle, a second rocker arm rotatably connected with the first rocker arm and a rocker arm motor for driving the second rocker arm to rotate.

Compared with the prior art, the ladle refining furnace adopting the technical scheme has the following beneficial effects:

1: in the production process, after the water-cooled furnace cover covers the ladle, most of the smoke generated in the ladle can be absorbed by the dust removal channel, a small part of the smoke leaked from a gap between the ladle and the water-cooled furnace cover can be absorbed by the smoke absorption cover, and the smoke is sent into the dust removal pipeline, so that the smoke leakage can be effectively prevented, and the air pollution to a factory is effectively reduced;

2: the flow valve is also arranged on the smoking cover, and the flow between the smoking channel and the dust removal pipeline can be conveniently controlled.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

FIG. 3 is a schematic view of the structure of a water-cooled furnace cover;

fig. 4 is a plan view of the smoke suction hood.

In the figure, 1, a transformer transportation flat car; 2. an electrode lifting device; 3. a base frame; 4. a furnace lid lifting mechanism; 5. a ladle turret; 6. a ladle; 7. a water-cooled furnace cover; 8. a dust removal pipeline; 71. cooling the annular tube; 72. a furnace hood; 73. a feed line; 74. a smoke suction hood; 721. a top cover; 722. a cover body; 723. a sealing section; 724. a step; 741. a smoking hole; 742. water-cooling the pipeline; 51. a base; 52. a drive motor; 53. A steel ladle mounting seat; 91. a first rocker arm; 92. a second rocker arm; 93. a rocker arm motor.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1:

as shown in fig. 1-4, the hinge assembly of the ladle refining furnace comprises a transformer transportation flat car 1, an electrode lifting device 2, a base frame 3, a furnace cover lifting mechanism 4 arranged on the base frame 3, a ladle turret 5, a ladle 6 arranged on the ladle turret 5, a water-cooling furnace cover 7 arranged on the ladle 6 and a dust removal pipeline 8 arranged in communication with the water-cooling furnace cover 7, wherein the transformer is arranged on the common transportation flat car in the field and is electrically connected with a graphite electrode on the motor lifting device through a lead wire, the electrode lifting device 2 is a common air cylinder or oil cylinder for driving to lift, the specific structure is the prior art, the detailed description is omitted here, the furnace cover lifting mechanism 4 lifts the water-cooling furnace cover 7 through a travelling crane driven by an LDA-10T electric single-beam crane, in this embodiment, a person can stand on the base frame 3, namely on the lifting platform, the lifting platform is simultaneously connected with the water-cooled furnace cover 7.

In this embodiment, the dust removal channel is connected to a dedicated dust removal device, and the dust removal device is the prior art and is not described herein again.

Specifically, water-cooling bell 7 includes bell cover 72 that forms through the welding of a plurality of cooling ring shape pipes 71, locates charge-in pipeline 73 on the bell cover 72 and locates the suction hood 74 at the edge of bell cover 72 bottom, suction hood and dust removal pipeline 8 intercommunication, just be equipped with the flow valve on the suction hood. The charging operation can be conveniently carried out in the ladle 6 through the charging pipeline 73, and the smoke absorbing hood 74 can absorb smoke leaked from the gap between the water-cooled furnace cover 7 and the ladle 6, so that the smoke leakage condition is effectively reduced.

In this embodiment, the water tank in the conventional furnace cover is replaced with the cooling ring tube 71, so that the gap between the electrode and the furnace cover is increased, and the occurrence of leakage of the furnace cover due to electric arc can be reduced, thereby reducing the water leakage phenomenon.

Specifically, the furnace cover 72 includes a top cover 721, a cover body 722 fixedly connected to the top cover 721, and a sealing section 723 disposed at the bottom of the cover body 722, wherein a section of step 724 is disposed between the sealing section 723 and the cover body 722. By adopting the arrangement of the structure, the graphite electrode is inserted through the top cover 721, the reducing atmosphere is contained through the cover body 722, meanwhile, the contact area between the sealing section 723 and the ladle 6 can be increased, so that the flue gas in the ladle 6 is not easy to leak out from the sealing section 723 and the ladle 6, the sealing performance is effectively enhanced, the step 724 between the sealing section 723 and the cover body 722 can be directly abutted against the top of the ladle 6, the sealing section 723 can be directly abutted against the outer wall of the ladle 6, the sealing performance between the ladle 6 and the furnace cover 72 can be further improved through the arrangement, and the occurrence of the leakage situation of the flue gas is reduced.

Specifically, a stop valve is provided at the end of each cooling ring pipe 71. The tail end of the cooling annular pipe 71 is provided with a stop valve, if the furnace cover leaks water, the water leaking pipeline can be independently drained, so that the fault treatment time is shortened, the installation and the structure of the stop valve are the prior art, and the stop valve is not described in detail here and is not marked in the attached drawings.

Specifically, the inner wall of the water-cooled furnace cover 7 is filled and leveled through welding. The cooling annular pipes 71 are arranged below the furnace cover and the inner sides of the cooling annular pipes 71 are welded, repaired and filled, so that slag adhering can be greatly reduced, and the problem that the furnace cover water pipe is damaged due to stress caused by deformation of the lining plate can be solved.

Specifically, the smoke suction hood 74 is disposed at an outer ring of the sealing section 723, and the smoke suction hood 74 is open. By adopting the structure, the area of smoking can be increased, and the smoking efficiency is effectively improved.

Specifically, a plurality of uniformly and densely arranged smoke suction holes 741 are formed in an inward facing surface of the smoke suction cover 74. By adopting the arrangement of the structure, the smoke is sucked through the smoke sucking hole 741, and the structure is simple.

Specifically, a water-cooled cooling duct 742 is provided inside the smoke suction hood 74. With the arrangement of the above structure, the cooling operation can be performed on the smoke suction hood 74, and the aging degree of the parts accelerated by overheating in the smoke suction hood 74 is prevented.

Specifically, the diameter of the smoke hole 741 is at least larger than 1 cm. By adopting the arrangement of the structure, the situation that the smoke sucking hole 741 is blocked by dust accumulation on smoke can be effectively reduced.

Specifically, the ladle turret 5 comprises a base 51, a driving motor 52 for driving the base 51 to rotate, and ladle mounting seats 53 arranged at two ends of the base 51, and the ladle 6 is arranged on the ladle mounting seats 53. By adopting the structure, two products can be simultaneously processed once by installing the two steel ladles 6 on the steel ladle installation seat 53, one product can also be processed firstly, then the base 51 is driven to rotate by the driving motor 52 to process the product in the next steel ladle 6, the last steel ladle 6 can be continuously processed after being cooled, and the processing efficiency is greatly improved.

Specifically, the ladle mounting seat 53 is further provided with a driving mechanism for driving the ladle 6 to turn over on the ladle mounting seat 53, and the driving mechanism comprises a first rocker arm 91 rotatably connected with the bottom of the ladle 6, a second rocker arm 92 rotatably connected with the first rocker arm 91, and a rocker arm motor 93 for driving the second rocker arm 92 to rotate. Adopt the setting of above-mentioned structure, through rocking arm motor 93 drive second rocking arm 92 rotation, second rocking arm 92 drives first rocking arm 91 and removes to can stimulate ladle 6 bottom, thereby lead to ladle 6 can overturn and pour out inside material, simple structure is reliable, easy operation.

The part of the utility model which is not described in detail is the prior art, so the utility model does not detail the part.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the transformer transporting carriage 1, the electrode elevating device 2, the base frame 3, the furnace cover lifting mechanism 4, the ladle turret 5, the ladle 6, the water-cooled furnace cover 7, the dust removing duct 8, the cooling ring pipe 71, the furnace cover 72, the feeding duct 73, the smoke suction hood 74, the top cover 721, the cover body 722, the sealing section 723, the step 724, the smoke suction hole 741, the water-cooled cooling duct 742, the base 51, the driving motor 52, the ladle mounting seat 53, the first swing arm 91, the second swing arm 92, the swing arm motor 93, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a ladle refining furnace, includes transformer transportation flatcar, electrode elevating gear, bed frame, locates bell hoist mechanism on the bed frame, ladle revolving platform, locates the ladle on the ladle revolving platform, locates the water-cooling bell on the ladle and locates the dust removal pipeline that communicates with the water-cooling bell, a serial communication port, the water-cooling bell includes the bonnet cover that forms through the welding of a plurality of cooling ring shape pipes, locates the charge-in pipeline on the bonnet cover and locates the suction hood at the edge of bonnet cover bottom, suction hood and dust removal pipeline intercommunication, just be equipped with the flow valve on the suction hood.

2. The ladle refining furnace of claim 1, wherein the furnace cover comprises a top cover, a cover body fixedly connected with the top cover, and a sealing section arranged at the bottom of the cover body, and a step is arranged between the sealing section and the cover body.

3. The ladle refining furnace of claim 1, wherein a stop valve is provided at the end of each cooling annular pipe.

4. The ladle refining furnace of claim 1, wherein the inner wall of the water-cooled furnace cover is filled and leveled by welding.

5. The ladle refining furnace of claim 2, wherein the fume hood is provided at an outer ring of the sealing section, and the fume hood is open.

6. The ladle refining furnace of claim 5, wherein the inward-facing side of the smoke absorption hood is provided with a plurality of uniformly and densely distributed smoke absorption holes.

7. The ladle refining furnace of claim 1, wherein the fume hood is internally provided with a water-cooled cooling pipeline.

8. The ladle refining furnace of claim 6, wherein the diameter of the smoke hole is at least greater than 1 cm.

9. The ladle refining furnace of claim 1, wherein the ladle turret includes a base, a driving motor for driving the base to rotate, and ladle mounting seats disposed at two ends of the base, and the ladles are disposed on the ladle mounting seats.

10. The ladle refining furnace of claim 9, wherein the ladle mounting seat is further provided with a driving mechanism for driving the ladle to turn over on the ladle mounting seat, and the driving mechanism comprises a first rocker arm rotatably connected with the bottom of the ladle, a second rocker arm rotatably connected with the first rocker arm, and a rocker arm motor for driving the second rocker arm to rotate.