CN209873008U

CN209873008U - Automatic bottom argon blowing device of LF stove

Info

Publication number: CN209873008U
Application number: CN201822058769.5U
Authority: CN
Inventors: 曹喜军; 杨海西; 樊利智; 杜雪飞
Original assignee: Jingye Steel Co Ltd
Current assignee: Jingye Steel Co Ltd
Priority date: 2018-12-08
Filing date: 2018-12-08
Publication date: 2019-12-31
Anticipated expiration: 2028-12-08

Abstract

The utility model relates to the technical field of LF furnaces, in particular to an automatic bottom argon blowing device of an LF furnace, which solves the defects that bottom argon blowing equipment of the LF furnace is easy to block and difficult to replace and maintain after blocking, thereby reducing the service life of the equipment in the prior art, and comprises an outer frame body and a steel ladle, wherein the inner part of the outer frame body is provided with the steel ladle, the inner part of the steel ladle is provided with a steel liquid chamber, a slag chamber is arranged above the steel liquid chamber, the top end of the steel ladle is provided with an electrode, one side of the top part of the steel ladle is provided with an alloy adding pipe, the bottom of the steel ladle is provided with an air brick, the utility model realizes bottom argon blowing operation by arranging a regulating brick to communicate the air brick with a connecting gas pipe, and the regulating brick can pass through the regulating brick firstly in the bottom argon blowing operation process, so the blockage can block the regulating brick firstly, and the whole operation life can be prolonged by, meanwhile, the regulating brick is convenient and simple to disassemble and install.

Description

Automatic bottom argon blowing device of LF stove

Technical Field

The utility model relates to a LF stove technical field especially relates to an automatic bottom argon blowing device of LF stove.

Background

An LF (ladle furnace), namely a ladle refining furnace, is a main external refining device in steel production, generally refers to a refining furnace in the steel industry, and is actually a special form of an electric arc furnace.

In the operation process of the LF furnace, bottom argon blowing equipment (air bricks and thin metal tube air supply bricks) is installed at the bottom of a steel ladle, argon is blown into molten steel through the air bricks at the bottom to form a large amount of fine argon bubbles, the air bricks have certain air permeability and also have to bear molten steel scouring, have certain high-temperature strength and better rapid cooling and heating resistance, and are generally made of high-alumina bricks. However, the bottom argon blowing equipment of the existing LF furnace is easy to block, and is difficult to replace and maintain after being blocked, so that the service life of the equipment is further shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the bottom argon blowing equipment that the LF stove that exists among the prior art possesses, stopping up easily, being difficult to change after stopping up and maintaining, and then having reduced the life's of equipment shortcoming, and the automatic bottom argon blowing device of LF stove that proposes.

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

the utility model provides an automatic bottom blowing argon device of LF stove, includes outer frame body and ladle, the inside of outer frame body is equipped with the ladle, and the inside of ladle is provided with the molten steel chamber, the top of molten steel chamber is equipped with the slag chamber, the top of ladle is provided with the electrode, and top one side of ladle is equipped with the alloy and adds the pipe, the bottom of ladle is equipped with air brick, and air brick's both sides all are provided with rabbling mechanism, the regulation and control groove has been seted up to the inside of outer frame body, and the regulation and control trench in the below of air brick, the inside in regulation and control groove is provided with the regulation and control brick, and the outside in regulation and control groove is equipped with the mounting panel, and fixedly on the mounting panel be provided with the mounting bracket, be provided with the gag lever post on the mounting bracket, and the gag lever.

Preferably, the rabbling mechanism includes servo motor, drive shaft, stirring rake, servo motor pass through the bolt install in the inside of outer frame body, servo motor's output end key connection has the drive shaft, and the welding has the stirring rake in the drive shaft.

Preferably, an exhaust port is formed in one side of the top of the steel ladle, a valve is arranged on the exhaust port, and the exhaust port is located below the alloy adding pipe.

Preferably, the length of the regulating groove is smaller than that of the air brick, the air brick is communicated with the regulating brick, and the regulating brick is communicated with the connecting gas pipe.

Preferably, the inside mesh structure that is of air brick, and air brick and molten steel chamber are inside to communicate with each other, the inside of regulation and control brick also is mesh structure.

Preferably, the bottom of the outer frame body is provided with two support columns.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses be provided with the air brick in the bottom of ladle, and seted up the regulation and control groove in the bottom of air brick, through regulating and controlling the inslot and set up the regulation and control brick, realize the air brick and be connected the work of being connected of gas-supply pipe, and regulate and control brick when using, through setting up the gag lever post in the outside of regulating and control brick, carry on spacingly to the regulation and control brick for the regulation and control brick is stable in the regulation and control inslot, keeps the reliable and stable of work.

2. The utility model discloses after long-time the use, when the jam appears, can be with the gag lever post from the vertical extraction on the mounting bracket, then can be convenient take out the regulation and control brick, clean the regulation and control brick, avoid blockking up the influence of wholly bringing for equipment, and convenient operation is simple.

To sum up, the utility model discloses a set up the regulation and control brick and carry out the intercommunication of air brick and connection gas-supply pipe, and then realize blowing argon operation at the bottom, and blow argon operation in-process at the bottom, can be earlier through the regulation and control brick, so block up also can block up earlier the regulation and control brick, can promote holistic operation life-span through clean regulation and control brick, the dismantlement simple to operate of regulation and control brick simultaneously is simple.

Drawings

Fig. 1 is a schematic structural view of an automatic bottom argon blowing device of an LF furnace provided by the present invention;

fig. 2 is a schematic structural view of a position a of the automatic bottom argon blowing device of the LF furnace provided by the present invention;

fig. 3 is the structure diagram of the position B of the automatic bottom argon blowing device of the LF furnace.

In the figure: the steel ladle furnace comprises an outer frame body 1, a steel ladle 2, a molten steel chamber 21, a slag chamber 22, a stirring mechanism 3, an alloy adding pipe 4, electrodes 5, air bricks 6, a regulating groove 7, regulating bricks 8, a mounting plate 9, a mounting frame 91, a limiting rod 10 and a gas conveying pipe 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, an embodiment of the present invention provides an automatic bottom argon blowing device for an LF furnace, which includes an outer frame body 1 and a ladle 2, the ladle 2 is disposed inside the outer frame body 1, a molten steel chamber 21 is arranged in the ladle 2, a slag chamber 22 is arranged above the molten steel chamber 21, an electrode 5 is arranged at the top end of the ladle 2, an alloy adding pipe 4 is arranged on one side of the top of the steel ladle 2, an air brick 6 is arranged at the bottom of the steel ladle 2, and both sides of the air brick 6 are provided with stirring mechanisms 3, the inner part of the outer frame body 1 is provided with a regulating groove 7, the regulating groove 7 is positioned below the air brick 6, the regulating brick 8 is arranged inside the regulating groove 7, the mounting plate 9 is arranged outside the regulating groove 7, and the mounting plate 9 is welded with a mounting frame 91, a limiting rod 10 is fixed on the mounting frame 91 through a screw, and the limiting rod 10 is positioned at the outer side of the regulating brick 8, and the bottom of the regulating brick 8 is communicated with a connecting gas pipe 11.

Specifically, rabbling mechanism 3 includes servo motor, drive shaft, stirring rake, and servo motor passes through the bolt and installs in the inside of outer frame 1, and servo motor's output end key is connected with the drive shaft, and has welded the stirring rake in the drive shaft, carries out certain stirring for interior operation through rabbling mechanism 3.

Specifically, the gas vent has been seted up to ladle 2's top one side, and is provided with the valve on the gas vent, and the gas vent is located the below that the alloy adds pipe 4, utilizes the valve can carry out opening and closing of exhaust function immediately.

Specifically, the length of regulation and control groove 7 is less than the length of air brick 6, and air brick 6 and regulation and control brick 8 intercommunication, and regulation and control brick 8 is linked together with being connected gas-supply pipe 11 for air brick 6 is for stable setting in the bottom of molten steel chamber 21, then inserts regulation and control brick 8 and establishes the setting in regulation and control groove, communicates with air brick 6, realizes the end argon blowing operation.

Specifically, the inside mesh structure that is of air brick 6, and air brick 6 and molten steel chamber 21 are inside to communicate each other, and the inside of regulation and control brick 8 also is mesh structure, and mesh structure guarantees the normal clear of bottom blowing argon operation.

Specifically, the bottom of the outer frame 1 is provided with two support columns, and the support columns support the whole equipment.

In this embodiment, be provided with air brick 6 in the bottom of ladle 2, and seted up regulation and control groove 7 in air brick 6's bottom, through set up regulation and control brick 8 in regulation and control groove 7, realize air brick 6 and the connection work of being connected gas-supply pipe 11, and regulation and control brick 8 is when using, through setting up gag lever post 10 in the outside of regulation and control brick 8, carry on spacingly to regulation and control brick 8, make regulation and control brick 8 stable in regulation and control groove 7, keep the reliable and stable of work.

In addition, carry out air brick 6 and the intercommunication of being connected the gas-supply pipe 11 through setting up regulation and control brick 8, and then realize the end argon operation of blowing, and blow the argon operation in-process at the end, can be earlier through regulation and control brick 8, so block up also can block up regulation and control brick 8 earlier, after long-time the use, when the jam appears, can vertically take out on mounting bracket 91 gag lever post 10 follow mounting bracket, then can be convenient take out regulation and control brick 8, clean regulation and control brick 8, avoid blockking up the influence that brings for equipment is whole, and convenient operation is simple.

Further, servo motor among the rabbling mechanism 3 supplies power through external power supply, and mounting bracket 91 is L type structure, and gag lever post 10 can directly be placed on mounting bracket 91, realizes prescribing a limit to the position of regulation and control brick 8, and the regulation and control is convenient simple simultaneously.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Claims

1. An automatic bottom argon blowing device of an LF (ladle furnace) comprises an outer frame body (1) and a ladle (2), and is characterized in that the ladle (2) is arranged in the outer frame body (1), a molten steel chamber (21) is arranged in the ladle (2), a slag chamber (22) is arranged above the molten steel chamber (21), an electrode (5) is arranged at the top end of the ladle (2), an alloy adding pipe (4) is arranged on one side of the top of the ladle (2), air bricks (6) are arranged at the bottom of the ladle (2), stirring mechanisms (3) are arranged on two sides of the air bricks (6), a regulating groove (7) is formed in the outer frame body (1), the regulating groove (7) is located below the air bricks (6), a regulating brick (8) is arranged in the regulating groove (7), a mounting plate (9) is arranged on the outer side of the regulating groove (7), and a mounting frame (91) is fixedly arranged on the mounting plate (9), be provided with gag lever post (10) on mounting bracket (91), and gag lever post (10) are located the outside of regulation and control brick (8), the bottom intercommunication of regulation and control brick (8) has connection gas-supply pipe (11).

2. The automatic bottom argon blowing device of the LF furnace according to claim 1, wherein the stirring mechanism (3) comprises a servo motor, a driving shaft and a stirring paddle, the servo motor is installed inside the outer frame body (1) through a bolt, the output end of the servo motor is in keyed connection with the driving shaft, and the stirring paddle is welded on the driving shaft.

3. The automatic bottom argon blowing device of the LF furnace according to claim 1, wherein an exhaust port is formed in one side of the top of the ladle (2), a valve is arranged on the exhaust port, and the exhaust port is located below the alloy adding pipe (4).

4. The automatic bottom argon blowing device of the LF furnace according to claim 1, wherein the length of the regulating and controlling groove (7) is smaller than that of the air brick (6), the air brick (6) is communicated with the regulating and controlling brick (8), and the regulating and controlling brick (8) is communicated with the connecting gas pipe (11).

5. The automatic bottom argon blowing device of the LF furnace according to claim 1, wherein the inside of the gas permeable brick (6) is in a mesh structure, the gas permeable brick (6) is communicated with the inside of the molten steel chamber (21), and the inside of the regulating brick (8) is also in a mesh structure.

6. The automatic bottom argon blowing device of the LF furnace according to claim 1, wherein the bottom of the outer frame body (1) is provided with two support columns.