CN205133654U - Cold steel can be effectively avoided and converter mouth seal structure that sediment got into is spouted - Google Patents

Abstract

The utility model discloses a cold steel can be effectively avoided and converter mouth seal structure that sediment got into is spouted, including water -cooling fire door, converter mouth, round pin axle, slide wedge, stove outer covering, the terminal surface sets up the water -cooling fire door on the converter mouth, through the round pin hub connection between converter mouth and the water -cooling fire door, the end sets up the slide wedge under the round pin axle, terminal surface department sets up the sealing ring under the converter mouth, the sealing ring is cylindricly, and the footpath is unanimous outside its outside diameter and the converter mouth, terminal surface and converter mouth rigid coupling on the sealing ring, surperficial rigid coupling outside lower terminal surface and the stove outer covering. The utility model discloses terminal surface department sets up the sealing ring under the converter mouth, and it is sealed inside to sell axle, slide wedge etc. And the annular concave seam between sediment, cold steel entering converter mouth and the furnace body skirtboard is spouted to effectual having avoided, has protected equipment such as round pin axle, slide wedge. The utility model discloses simple structure, the preparation is easy, and the reliable operation can effectively be avoided cold steel and spout the annular concave seam that the sediment got into converter mouth department.

Description

A kind of converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter

Technical field

The utility model belongs to technical field of metallurgical equipment, belongs to steelmaking equipment technical field further, is specifically related to a kind of structure simply, makes easily, reliable operation, effectively can avoid the converter mouth sealed structure that cold steel and spray slag enter.

Background technology

In process for making, splash during in order to reduce blowing and the discharge of calorific loss and furnace gas, therefore the shape of furnace crown all makes frustoconical, its fire door is positive fire door, is used for feeding in raw material, and inserts oxygen lance, discharges furnace gas and deslagging.Because furnace crown is in high-temperature furnace gas district, directly by splashings scaling loss, and by the photothermal effect of petticoat pipe, its temperature often up to 300 ° of C to 400 DEG C, under the effect of high temperature, furnace crown and fire door very easily produce distortion.In order to protect fire door, generally adopting at present and passing into the furnace water-cooling mouth that recirculated water forces cooling, so not only can reduce the removing that fire door is out of shape but also is convenient to fire door slagging scorification.Furnace water-cooling mouth has water tank type and pipe embedded typ two kinds of structures.Water tank type furnace water-cooling mouth, it adopts welded-steel plate construction, is welded with some water-stop sheets in its water tank, makes water coolant in water tank, form a loop, also plays the effect of stiffening web simultaneously.This structure cooling intensity is comparatively large, easy to manufacture, but easily ftractures due to weld seam, and therefore security is poor, uses less at present.Pipe embedded typ furnace water-cooling mouth, it the snakelike steel tube passing into water coolant is buried cast from cast iron, and this structure cooling intensity is not as water tank type, but security and life-span are all high than water tank type, on current medium-and-large-sized steel-making converter, generally adopts pipe embedded typ furnace water-cooling mouth.The structure that furnace water-cooling mouth generally adopts bearing pin and wedge to coordinate with the connection of converter mouth.

In converter steelmaking process, slag splash is recurrent phenomenon, and especially the middle primary converter of some dilatations or overcharge is more common.Slag splash not only increases the loss of furnace charge and temperature, also causes the loss of a large amount of metal.According to statistics, slag splash causes metal loss to be 0.5% ~ 5%, has had a strong impact on the lumber recovery of steel-making; Smolder during slag splash, contaminate environment; The ejecta of splash is piled up, and remove difficulty, serious splash also can be accidents caused, jeopardizes the person and device security; When splashings vomit, not only impact removes P, S, and calorific loss increases, and molten steel amount also can be caused to change, and the stability controlled is smelted in impact.

In addition, the impact of splash on furnace water-cooling mouth and converter mouth junction is very large, due to the structure that furnace water-cooling mouth generally adopts bearing pin and wedge to coordinate with the connection of converter mouth, a ring shape recessed joint is had between converter mouth and body of heater skirtboard, in molten iron smelting process, this annular recessed joint can by spray slag, cold steel etc. are filled rapidly, when utilizing production gap fettling, must be cleared up with disassembling furnace machine, both lost time, turn increase the labour intensity of workman, simultaneously easy to furnace water-cooling mouth, coupling device, bearing pin, the equipment such as tiltedly to carve causes damage, affect water-cooled effect, and there is larger safety and hidden trouble of equipment.When converter full cut-off smashes stove overhaul, need the time expending more than 5 hours to clear up the spray slag in annular recessed joint, cold steel, production is exerted a certain influence.

For this reason, develop a kind of structure simple, make easily, reliable operation, the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter is the key addressed this problem.

Utility model content

It is simple that the purpose of this utility model is to provide a kind of structure, makes easily, reliable operation, effectively can avoid the converter mouth sealed structure that cold steel and spray slag enter.

The purpose of this utility model is achieved in that and comprises furnace water-cooling mouth, converter mouth, bearing pin, wedge, furnace shell, and the upper surface of described converter mouth arranges furnace water-cooling mouth; Pinned connection is passed through between described converter mouth and furnace water-cooling mouth; The lower end of described bearing pin arranges wedge; Under described converter mouth, end arranges wear ring; Cylindrically, its outside diameter is consistent with the external diameter of converter mouth for described wear ring; Upper surface and the converter mouth of described wear ring are affixed, and the outside surface of lower surface and furnace shell is affixed.

The utility model end under converter mouth arranges wear ring, bearing pin, wedge etc. is sealed in the inside.After adopting this kind of structure, effectively avoid spray slag, cold steel and enter annular recessed joint between converter mouth and body of heater skirtboard, protect the equipment such as the bearing pin in annular recessed joint, wedge.The utility model energy available protecting furnace water-cooling mouth, improves water-cooled effect, is convenient to cleaning simultaneously; When utilizing production gap fettling, do not need cleaning spray slag, cold steel, fettling required time is short, and the labour intensity of workman is low, and eliminates safety and hidden trouble of equipment.When converter full cut-off smashes stove overhaul, only wear ring need be taken off, just can check furnace water-cooling mouth or change, very fast, very little on the impact of producing.The utility model structure is simple, makes easily, reliable operation, can effectively avoid cold steel and spray slag to enter the annular recessed joint at converter mouth place.

Accompanying drawing explanation

Fig. 1 is the one-piece construction schematic diagram of the utility model;

Fig. 2 is I enlarged diagram of Fig. 1;

Fig. 3 is the main cross-sectional schematic of wear ring of the utility model;

Fig. 4 is the schematic top plan view of Fig. 3;

In figure: 1-furnace water-cooling mouth, 2-converter mouth, 3-bearing pin, 4-wedge, 5-wear ring, 6-furnace shell.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail, but limited the utility model never in any form, based on any conversion that the utility model training centre is done, all falls into the utility model protection domain.

As shown in Fig. 1 ~ 4, the utility model comprises furnace water-cooling mouth 1, converter mouth 2, bearing pin 3, wedge 4, furnace shell 6, and the upper surface of described converter mouth 2 arranges furnace water-cooling mouth 1; Described converter mouth 2 is connected by bearing pin 3 with between furnace water-cooling mouth 1; The lower end of described bearing pin 3 arranges wedge 4; Under described converter mouth 2, end arranges wear ring 5; Cylindrically, its outside diameter is consistent with the external diameter of converter mouth 2 for described wear ring 5; Upper surface and the converter mouth 2 of described wear ring 5 are affixed, and the outside surface of lower surface and furnace shell 6 is affixed.

The upper surface of described wear ring 5 is welded with converter mouth 2, surface-welding outside lower surface and furnace shell 6.

The height of described wear ring 5 adapts with the annular recessed joint at furnace water-cooling mouth place.

The thickness of described wear ring 5 is 16 ~ 20mm.

Described wear ring 5 is made up of 4 ~ 6 arc plates, at the scene after assembling, welds between adjacent two pieces arc plate.

Described wear ring 5 arranges hanger.

principle of work of the present utility model and working process:

The utility model arranges wear ring 5 at the lower surface place of converter mouth 2, bearing pin 3, wedge 4 etc. is sealed in the inside.After adopting this kind of structure, effectively avoid spray slag, cold steel and enter annular recessed joint between converter mouth 2 and body of heater skirtboard, protect the equipment such as the bearing pin 3 in annular recessed joint, wedge 4.The utility model energy available protecting furnace water-cooling mouth 1, improves water-cooled effect, is convenient to cleaning simultaneously; When utilizing production gap fettling, do not need cleaning spray slag, cold steel, fettling required time is short, and the labour intensity of workman is low, and eliminates safety and hidden trouble of equipment.When converter full cut-off smashes stove overhaul, only wear ring 5 need be taken off, just can check furnace water-cooling mouth 1 or change, very fast, very little on the impact of producing.

Claims (6)

1. the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter, comprise furnace water-cooling mouth (1), converter mouth (2), bearing pin (3), wedge (4), furnace shell (6), the upper surface of described converter mouth (2) arranges furnace water-cooling mouth (1); Described converter mouth (2) is connected by bearing pin (3) with between furnace water-cooling mouth (1); The lower end of described bearing pin (3) arranges wedge (4); It is characterized in that: under described converter mouth (2), end arranges wear ring (5); Cylindrically, its outside diameter is consistent with the external diameter of converter mouth (2) for described wear ring (5); Upper surface and the converter mouth (2) of described wear ring (5) are affixed, and the outside surface of lower surface and furnace shell (6) is affixed.

2. according to claim 1ly effectively can avoid cold steel and the converter mouth sealed structure that enters of spray slag, it is characterized in that: the upper surface of described wear ring (5) is welded with converter mouth (2), surface-welding outside lower surface and furnace shell (6).

3. the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter according to claim 1, is characterized in that: the described height of wear ring (5) adapts with the annular recessed joint at furnace water-cooling mouth place.

4. the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter according to claim 1, is characterized in that: the thickness of described wear ring (5) is 16 ~ 20mm.

5. the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter according to claim 1, is characterized in that: described wear ring (5) is made up of 4 ~ 6 arc plates, at the scene after assembling, welds between adjacent two pieces arc plate.

6. the converter mouth sealed structure can effectively avoiding cold steel and spray slag to enter according to claim 1, is characterized in that: described wear ring (5) arranges hanger.