CN213496463U

CN213496463U - Bottom pouring type molten steel purification device

Info

Publication number: CN213496463U
Application number: CN202021549071.4U
Authority: CN
Inventors: 周正; 赵四勇; 廖钊; 康健; 田辉
Original assignee: Guangxi Changcheng Mechanical Ltd By Share Ltd
Current assignee: Guangxi Changcheng Mechanical Ltd By Share Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-06-22
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a bottom pouring type molten steel purification device, which comprises a plug rod, a furnace body, an argon bottle and a lifting device, wherein the argon bottle supplies air to the furnace body; the inner wall of the furnace body is provided with a wall lining, and the bottom of the furnace body is provided with a bottom lining; a furnace wall protection device is arranged in the wall lining; the bottom lining is internally provided with air bricks; the argon bottle is connected with the air inlet of the air brick through a hose and a seamless stainless steel pipe in sequence; the plug rod is vertically arranged in the furnace body, the upper end of the plug rod extends upwards to the upper part of the opening at the upper end of the furnace body, and the lower end of the plug rod extends downwards to the bottom of the furnace body; the lifting device is arranged on the outer side of the furnace body, and the upper end of the lifting device is connected with the upper end of the plug rod through a connecting rod which is horizontally arranged; one side of the upper end of the furnace body close to the lifting device is provided with a vertical splash guard. The utility model can realize molten steel purification by injecting inert gas, replace manual mode, and add anti-splash board, avoid the danger of molten steel splashing burn; the wall lining is internally provided with a protection device which can effectively protect the furnace wall and a control system of the whole set of purification device.

Description

Bottom pouring type molten steel purification device

Technical Field

The utility model relates to a casting equipment field, concretely relates to end notes formula molten steel purifier.

Background

The purity degree of the molten steel directly influences the quality of the casting, and the content of impurities such as oxides, inclusions, gas and the like in the molten steel directly influences the material performance of the casting. In order to ensure that the molten steel forms a casting in a pure state, in addition to refining and purification in a smelting furnace, in the process of pouring the molten steel into a ladle, harmful effects such as slag inclusion, gas inclusion, oxidation and the like can occur, and the ladle needs to be improved to improve the purification effect of the molten steel. The steel ladle inner steel water purification method which is commonly used at present has three types: 1. in the aspect of large-scale and continuous casting, a tundish is adopted for external refining, and the method is not suitable for the production of various small-batch castings, and has high energy consumption and large occupied area; 2. the traditional method mostly adopts a method of passively standing molten steel in a ladle, steel slag and oxides in the molten steel automatically float upwards through density difference, gas floats upwards after forming enough pressure through polymerization, and the purification effect of the molten steel is not ideal; 3. the method of oxygen blowing through an insert tube in a steel ladle has the defects of influence on chemical components in molten steel, increase of oxides, inconvenience in operation and the like; 4. the lack of a safety structure, the molten steel is easy to splash out of the casting equipment to hurt people; 5. when the operating lever is operated manually, an operator is too close to the pouring equipment and is easily burnt by the sputtered molten steel; 6. the lack of a protection device can not effectively protect the fire-resistant lining of the furnace wall and the whole set of improved steel containing device control system, and when the molten steel seeps out of the fire-resistant lining of the furnace wall and is communicated with the furnace shell, the total power supply of the melt can not be closed in time, thereby causing the occurrence of furnace penetration accidents.

SUMMERY OF THE UTILITY MODEL

The utility model provides a formula molten steel purifier is annotated at end to above-mentioned technical problem replaces current manually operation mode to add splash shield, protection device, effectively protect oven and a whole set of purifier's control system, with the normal operating of guaranteeing operating personnel's safety and whole molten steel purifier control system.

In order to realize the purpose, the utility model adopts the following technical scheme:

a bottom pouring type molten steel purification device comprises a plug rod, a furnace body, an argon bottle and a lifting device, wherein the furnace body and the argon bottle are both vertically arranged with openings upward, and the argon bottle supplies air to the furnace body; the inner wall of the furnace body is provided with a wall lining, and the bottom of the furnace body is provided with a bottom lining; the wall lining is internally provided with a furnace wall protection device, the furnace wall protection device comprises a heating induction coil, a temperature inductor and a lead, and the temperature inductor is connected with the heating induction coil through the lead; the bottom lining is internally provided with air bricks; the argon bottle is connected with the air inlet of the air brick sequentially through a hose and a seamless stainless steel pipe; the plug rod is vertically arranged in the furnace body, the upper end of the plug rod extends upwards to the upper part of the opening at the upper end of the furnace body, and the lower end of the plug rod extends downwards to the bottom of the furnace body; the lifting device is arranged on the outer side of the furnace body, and the upper end of the lifting device is connected with the upper end of the plug rod through a connecting rod which is horizontally arranged; and a vertical splash guard is arranged at one side of the upper end of the furnace body, which is close to the lifting device.

Furthermore, a brick cup is fixedly arranged in the bottom lining, a casting nozzle brick is arranged in the brick cup, and a flow channel is arranged in the casting nozzle brick; the periphery of the part of the plug rod in the furnace body is wrapped with sleeve bricks, and the periphery of the lower end of the plug rod is wrapped with plug bricks; in a natural state, the bottom of the stopper brick is attached to the top of the casting nozzle brick, when the stopper rod is lifted, the stopper brick is separated from the casting nozzle brick, and the flow channel is communicated with the furnace body.

Furthermore, the lifting device comprises a lifting rod, a guide sleeve and a cylinder, the guide sleeve is vertically and fixedly arranged on the outer side of the furnace body, the lifting rod is vertically arranged in the guide sleeve and can move up and down in the guide sleeve, and the upper end of the lifting rod is connected with the upper end of the plug rod through a connecting rod; the guide sleeve is vertically provided with a screw, and the screw can fix the lifting rod in the guide sleeve; the cylinder vertically locate and carry under the pull rod, the push rod of cylinder and the lower extreme fixed connection of pull rod drive the lift rod and go up and down. The cylinder may be replaced by a hydraulic cylinder.

Furthermore, the wall lining and the bottom lining comprise a brick layer, a sand layer and a heat-insulating layer.

Furthermore, the seamless stainless steel pipe is connected with the hose through a quick connector.

Furthermore, the hose is a PU hose pipe.

The utility model has the advantages of compared with the prior art:

the utility model is provided with a lifting device outside the furnace body, and can control the lifting or lowering of the stopper rod inside the molten steel purification device through the matching among the cylinder, the guide sleeve and the lifting rod, thereby realizing the separation or the lamination of the stopper brick and the casting nozzle brick; the anti-splash plate is arranged on one side close to the lifting rod, so that a shielding effect is achieved for operating personnel, the safety of workers is guaranteed, and meanwhile, a shielding and protecting effect is achieved for the lifting device; the lifting device adopts an air cylinder to replace a manual lifting mode, can be remotely controlled, and avoids the danger that an operator is splashed and burned by molten steel in the operation process of approaching the molten steel purification device; the wall lining is internally provided with a protection device which effectively protects the furnace wall and a control system of the whole set of purification device, when the molten steel seeps out of the wall lining and is communicated with the furnace shell, the protection device is turned on to timely turn off the main power supply of the melt, thereby avoiding the occurrence of furnace penetration accidents.

The utility model discloses rationally set up air brick in the end liner, through pouring into inert pressure gas, help the impurity such as slag in the molten steel, oxide come-up rapidly, purify abundant and effectively avoid molten steel composition oxidation and loss, help energy-conserving increase of efficiency, safe practicality.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the furnace wall protection device of the present invention;

the numbers and names in the figure are as follows:

1-a stopper rod; 2-lifting the pull rod; 3-a connecting rod; 4-sleeve bricks; 5-a screw; 6-cylinder; 7-furnace body; 8-a stopper brick; 9-casting nozzle brick; 10-brick setting; 11-wall lining; 12-air brick; 13-seamless stainless steel tube; 14-a hose; 15-argon bottle; 16-a splash shield; 17-bottom lining; 18-a flow channel; 19-a guide sleeve; 20-furnace wall protection device.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment. It should be understood that the directions "up", "down", "left" and "right" in the following embodiments of the present invention are all based on the position of the corresponding drawing. These directional terms are used for convenience of description only and do not represent limitations on the particular embodiments of the present invention. Unless otherwise specified, like reference numerals in the reference numerals refer to like structures.

As shown in figure 1, the bottom pouring type molten steel purification device comprises a plug rod 1, a furnace body 7, an argon bottle 15 and a lifting device, wherein the furnace body 7 and the argon bottle 15 are both vertically arranged with upward openings, and the argon bottle 15 supplies air to the furnace body 7; the inner wall of the furnace body 7 is provided with a wall lining 11, and the bottom of the furnace body is provided with a bottom lining 17; a furnace wall protection device 20 is arranged in the wall lining 11, the furnace wall protection device 20 comprises a heating induction coil, a temperature inductor and a lead, and the temperature inductor is connected with the heating induction coil through the lead; the bottom lining 17 is internally provided with air bricks 12; the argon bottle 15 is connected with the air inlet of the air brick 12 through a hose 14 and a seamless stainless steel pipe 13 in sequence; the plug rod 1 is vertically arranged in the furnace body 7, the upper end of the plug rod 1 extends upwards to the upper part of an opening at the upper end of the furnace body 7, and the lower end of the plug rod 1 extends downwards to the bottom of the furnace body 7; the lifting device is arranged on the outer side of the furnace body 7, and the upper end of the lifting device is connected with the upper end of the plug rod 1 through a connecting rod 3 which is horizontally arranged; and a vertical splash guard 16 is arranged at one side of the upper end of the furnace body 7 close to the lifting device.

A brick cup 10 is fixedly arranged in the bottom lining 19, a casting nozzle brick 9 is arranged in the brick cup 10, and a runner 18 is arranged in the casting nozzle brick 9; the periphery of the part of the plug rod 1 positioned in the furnace body 7 is wrapped with sleeve bricks 4, and the periphery of the lower end of the plug rod 1 is wrapped with plug bricks 8; in a natural state, the bottom of the stopper brick 8 is attached to the top of the casting nozzle brick 9, when the stopper rod 1 is lifted, the stopper brick 8 is separated from the casting nozzle brick 9, and the runner 18 is communicated with the furnace body 7.

The lifting device comprises a lifting rod 2, a guide sleeve 19 and a cylinder 6, wherein the guide sleeve 19 is vertically and fixedly arranged on the outer side of the furnace body 7, the lifting rod 2 is vertically arranged in a guide sleeve 18 and can move up and down in the guide sleeve 19, and the upper end of the lifting rod 2 is connected with the upper end of the plug rod 1 through a connecting rod 3; the guide sleeve 19 is vertically provided with a screw 5, and the lifting rod 2 can be fixed in the guide sleeve 19 by the screw 5; the cylinder 6 is vertically arranged under the lifting rod 2, and a push rod of the cylinder 6 is fixedly connected with the lower end of the lifting rod 2 to drive the lifting rod 2 to lift.

The wall lining 11 and the bottom lining 17 comprise brick layers, sand layers and heat-insulating layers.

The seamless stainless steel pipe 13 is connected with a hose 14 through a quick connector.

The hose 14 is a PU hose.

The utility model discloses a working process does:

before molten steel is poured into a steel ladle from a smelting furnace, a gas storage bottle 15 is opened, small flow and pressure are pre-applied, argon enters a furnace body 7 through a hose 14, a seamless stainless steel pipe 13 and a gas permeable brick, after the molten steel is poured, the flow and pressure of the introduced argon are adjusted along with the increase of the molten steel, and inert pressure gas argon is injected to help the impurities such as steel slag, oxides and the like in the molten steel to quickly float upwards, so that the effect of fully purifying is achieved, and the oxidation and loss of the components of the molten steel are effectively avoided; after purification is finished, the screw 5 is unscrewed, the cylinder 6 is started to lift the lifting rod 2, and then the connecting rod 3 drives the plug rod 1 to lift, so that the plug brick 8 is separated from the sprue brick 9, the runner 19 is communicated with the furnace body 7, and molten steel flows out of the runner 19 and is injected into the cavity. Set up 6 heating induction coils in wall lining 11, be provided with 3 inductive contacts on every heating induction coil, every two heating induction coils interval 200mm, can effectively protect wall lining 11 and whole set of modified steel containing device control system, ooze wall lining 11 when conducting with the stove shell when the molten steel, wrap wall protection device 20 and open, in time close fuse-element mains supply, avoid wearing the stove accident to take place.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. A bottom pouring type molten steel purification device comprises a plug rod (1), a furnace body (7), an argon bottle (15) and a lifting device, and is characterized in that the furnace body (7) and the argon bottle (15) are both vertically arranged with openings upward, and the argon bottle (15) supplies air to the furnace body (7); the inner wall of the furnace body (7) is provided with a wall lining (11), and the bottom of the furnace body is provided with a bottom lining (17); a furnace wall protection device (20) is arranged in the wall lining (11), the furnace wall protection device (20) comprises a heating induction coil, a temperature inductor and a lead, and the temperature inductor is connected with the heating induction coil through the lead; the bottom lining (17) is internally provided with air bricks (12); the argon bottle (15) is connected with the air inlet of the air brick (12) through a hose (14) and a seamless stainless steel pipe (13) in sequence; the plug rod (1) is vertically arranged in the furnace body (7), the upper end of the plug rod (1) extends upwards to the upper part of an opening at the upper end of the furnace body (7), and the lower end of the plug rod (1) extends downwards to the bottom of the furnace body (7); the lifting device is arranged on the outer side of the furnace body (7), and the upper end of the lifting device is connected with the upper end of the plug rod (1) through a connecting rod (3) which is horizontally arranged; and a vertical splash guard (16) is arranged at one side of the upper end of the furnace body (7) close to the lifting device.

2. The bottom-pouring molten steel purification apparatus according to claim 1, characterized in that: a brick cup (10) is fixedly arranged in the bottom lining (17), a casting nozzle brick (9) is arranged in the brick cup (10), and a runner (18) is arranged in the casting nozzle brick (9); sleeve bricks (4) are wrapped around the part of the plug rod (1) positioned in the furnace body (7), and plug bricks (8) are wrapped around the lower end of the plug rod (1); in a natural state, the bottom of the stopper brick (8) is attached to the top of the casting nozzle brick (9), when the stopper rod (1) is lifted, the stopper brick (8) is separated from the casting nozzle brick (9), and the runner (18) is communicated with the furnace body (7).

3. The bottom-pouring molten steel purification apparatus according to claim 1, characterized in that: the lifting device comprises a lifting rod (2), a guide sleeve (19) and a cylinder (6), the guide sleeve (19) is vertically and fixedly arranged on the outer side of the furnace body (7), the lifting rod (2) is vertically arranged in the guide sleeve (19) and can move up and down in the guide sleeve (19), and the upper end of the lifting rod (2) is connected with the upper end of the plug rod (1) through a connecting rod (3); the guide sleeve (19) is vertically provided with a screw (5), and the lifting rod (2) can be fixed in the guide sleeve (19) by the screw (5); the cylinder (6) is vertically arranged under the lifting rod (2), and a push rod of the cylinder (6) is fixedly connected with the lower end of the lifting rod (2) to drive the lifting rod (2) to lift.

4. The bottom-pouring molten steel purification apparatus according to claim 1, characterized in that: the wall lining (11) and the bottom lining (17) comprise brick layers, sand layers and heat-insulating layers.

5. The bottom-pouring molten steel purification apparatus according to claim 1, characterized in that: the seamless stainless steel pipe (13) is connected with the hose (14) through a quick connector.

6. The bottom-pouring molten steel purification apparatus according to claim 1, characterized in that: the hose (14) is a PU hose pipe.