CN204770646U - Steelmaking is with centrifugal slagging -off of liquid sediment machine - Google Patents

Abstract

A liquid slag centrifugal type slag remover for steelmaking belongs to the technical field of steelmaking equipment. The slag remover of the utility model drives the lead screw to rotate, and then realizes the lifting of the slag collecting cover, the centrifugal rake and the slag holding tray, until the centrifugal rake is inserted into the slag, and drives the centrifugal rake to rotate at a high speed, so that the blades are continuously taken away from the slag, At the same time, under the action of centrifugal force, the slag on the paddle is thrown to the inner wall of the slag collecting cover, and the slag reaching the inner wall of the slag collecting cover can fall into the slag holding tray under the action of gravity, turn over the slag holding tray, and put the slag holding The slag in the tray is poured into the waste slag tank, and the slag removal work is completed. Aiming at the shortcomings of the existing slag removal equipment, the utility model adopts a brand-new slag removal method after abandoning the original design idea, that is, the centrifugal slag removal is carried out through the high-speed rotation of the centrifugal rake. The slag removal machine has a smaller footprint, better operation flexibility, and can effectively shorten the slag removal time, and at the same time, the slag removal is more clean and thorough.

Description

A liquid slag centrifugal type slag remover for steelmaking

technical field

The utility model belongs to the technical field of steelmaking equipment, in particular to a liquid slag centrifugal type slag remover for steelmaking.

Background technique

In the process of steelmaking, the production target of each station is mainly achieved through slagging, and slagging plays an important role in steelmaking. In smelting, different stations will have different slags, and the slag composition is also different, which requires that after the production of a certain station is completed, the slag of this station must be removed to ensure the smooth production of the next station .

When the amount of slag in the blast furnace is large, it is about 1% to 5% of the molten iron, and the sulfur content in the slag can sometimes be as high as 1.5%, so it is necessary to remove the slag from the ladle for the pretreatment process of the molten iron;

Before the vacuum continuous casting (VD) treatment, if the slag removal is not carried out, the bottom blowing argon gas will cause the slag to expand rapidly during the vacuuming process, resulting in a large amount of foamy slag and slag overflow, so it must be removed The slag in the ladle is removed.

The current slag removal equipment includes telescopic arm type slag remover and trolley walking type slag remover, which have the disadvantages of large floor space, insufficient operational flexibility, long time for slag removal and unclean slag removal.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a liquid slag centrifugal type slag remover for steelmaking, which has the advantages of small footprint, good operational flexibility, short slag removal time and clean and thorough slag removal.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a liquid slag centrifugal slag remover for steelmaking, including a frame, a lead screw, a first drive motor, a first wire nut, a second wire nut, a first The lifting arm, the second lifting arm, the second driving motor, the rotating shaft, the slag collecting cover, the slag holding tray and the centrifugal rake, the screw is vertically installed in the frame, and the first driving motor is vertically installed in the machine frame At the top of the frame, the motor shaft of the first driving motor is fixedly connected to one end of the lead screw, and the first screw nut and the second screw nut are sequentially set on the lead screw from top to bottom; the first lifting arm is set horizontally, One end of the first lifting arm is fixedly connected with the first nut, the second driving motor is vertically installed at the other end of the first lifting arm, the motor shaft of the second driving motor is fixedly connected with one end of the rotating shaft, and the centrifugal rake is installed At the other end of the rotating shaft; the slag collecting cover is located directly below the second drive motor and is fixedly connected to the first lifting arm, and the centrifugal rake is located inside the slag collecting cover; the second lifting arm is horizontally set, and the second One end of the lifting arm is fixedly connected with the second wire nut, the slag holding tray is installed at the other end of the second lifting arm, and the slag holding tray is located directly below the slag collecting cover.

The slag holding tray adopts a circular structure, and the slag holding tray and the second lifting arm are connected by a turning shaft, and the slag holding tray can be turned 360° around the turning axis.

The inner diameter of the slag collecting cover is smaller than the outer diameter of the slag holding pan and larger than the inner diameter of the slag holding pan.

The centrifugal rake includes a connecting base, a paddle handle and paddle blades, the connecting base is fixedly connected to the rotating shaft, one end of the paddle handle is hinged on the connecting base, and the paddle blade is arranged at the other end of the paddle handle.

A screw rod is vertically arranged in the center of the connecting seat, the screw rod can rotate freely relative to the connecting seat but cannot move in the axial direction, and a nut is set on the screw rod; a support rod is arranged between the nut and the paddle handle, and one end of the support rod Hinged on the nut, the other end of the support rod is hinged in the middle of the paddle handle.

The paddle handle and the paddle form a slag removal paddle, and the number of slag removal paddles is at least three, and the slag removal paddles are uniformly distributed in the circumferential direction.

The slag removal paddle is set at an included angle with the horizontal plane, and the included angle ranges from 45° to 90°.

The blade has an inwardly curved radian ranging from 5° to 30°.

The slag removal method using the liquid slag centrifugal type slag remover for steelmaking comprises the following steps:

Step 1: Drive the ladle car or ladle car to the slag removal position;

Step 2: Start the first drive motor, drive the lead screw to rotate through the first drive motor, drive the first screw nut and the second screw nut to run downward along the lead screw through the rotation of the lead screw, and then drive the first lifting arm, the second The lifting arm moves down until the centrifugal rake is inserted into the slag in the ladle car or ladle car;

Step 3: Start the second drive motor, drive the rotating shaft to rotate at a high speed through the second drive motor, and then drive the centrifugal rake to rotate at a high speed. Through the high-speed rotation of the centrifugal rake, the blades are continuously taken away from the slag in the ladle car or ladle car. At the same time, the paddle The impeller is always subjected to centrifugal force during high-speed rotation, and the slag on the blade is thrown to the inner wall of the slag collecting cover under the action of centrifugal force, and the slag reaching the inner wall of the slag collecting cover falls into the slag holding tray under the action of gravity;

Step 4: After the slag in the ladle car or ladle car is removed, first turn off the second drive motor, then start the first drive motor in reverse, and drive the lead screw to rotate in reverse through the first drive motor. Rotation drives the first screw nut and the second screw nut to run upward along the lead screw, and then drives the first lifting arm and the second lifting arm to run upward until the centrifugal rake is completely lifted off the ladle car or ladle car;

Step 5: Drive the ladle car or ladle car away from the slag removal position;

Step 6: Turn over the slag holding tray, pour the slag in the slag holding tray into the waste slag tank, and the slag removal work is completed.

The beneficial effects of the utility model:

Aiming at the shortcomings of the existing slag removal equipment, the utility model abandons the original design idea and adopts a brand-new slag removal method, that is, centrifugal slag removal is carried out through the high-speed rotation of the centrifugal rake. The slag machine has a smaller footprint, better operational flexibility, and can effectively shorten the slag removal time, and at the same time, the slag removal is cleaner and more thorough.

Description of drawings

Fig. 1 is a structural schematic diagram of a liquid slag centrifugal type slag remover for steelmaking of the present invention;

Fig. 2 is the structure diagram of the centrifugal harrow of the present utility model;

Fig. 3 is A-A sectional view among Fig. 1;

In the figure, 1—frame, 2—screw, 3—the first driving motor, 4—the first screw nut, 5—the second screw nut, 6—the first lifting arm, 7—the second lifting arm, 8— The second driving motor, 9—rotating shaft, 10—slag collecting cover, 11—slag holding tray, 12—centrifugal rake, 13—connecting seat, 14—paddle handle, 15—blade, 16—screw rod, 17—nut, 18—support rod, 19—overturning shaft.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1, 2, and 3, a liquid slag centrifugal type slag remover for steelmaking includes a frame 1, a lead screw 2, a first drive motor 3, a first wire nut 4, a second wire nut 5, The first lifting arm 6, the second lifting arm 7, the second driving motor 8, the rotating shaft 9, the slag collecting cover 10, the slag holding tray 11 and the centrifugal rake 12, the screw 2 is vertically installed in the frame 1, The first driving motor 3 is vertically installed on the top of the frame 1, and the motor shaft of the first driving motor 3 is fixedly connected to one end of the leading screw 2. The first screw nut 4 and the second screw nut 5 are arranged from top to bottom. The first lifting arm 6 is set horizontally, one end of the first lifting arm 6 is fixedly connected with the first screw nut 4, and the second driving motor 8 is vertically installed on the first lifting arm 6. At the other end, the motor shaft of the second driving motor 8 is fixedly connected to one end of the rotating shaft 9, and the centrifugal rake 12 is installed on the other end of the rotating shaft 9; the slag collecting cover 10 is located directly below the second driving motor 8, and Fixedly connected with the first lifting arm 6, the centrifugal rake 12 is located inside the slag collecting cover 10; the second lifting arm 7 is arranged horizontally, one end of the second lifting arm 7 is fixedly connected with the second wire nut 5, and the slag holding The disc 11 is installed on the other end of the second lifting arm 7, and the slag holding disc 11 is located directly below the slag collecting cover 10.

The slag holding pan 11 adopts a ring structure, and the slag holding pan 11 is connected with the second lifting arm 7 through a turning shaft 19, and the slag holding pan 11 can be turned around the turning shaft 19 for 360°.

The inner diameter of the slag collecting cover 10 is smaller than the outer diameter of the slag holding pan 11 and larger than the inner diameter of the slag holding pan 11 .

Described centrifugal rake 12 comprises connecting seat 13, paddle handle 14 and paddle 15, and described connecting seat 12 is fixedly connected with rotating shaft 9, and one end of described paddle handle 14 is hinged on connecting seat 13, and described paddle 15 is arranged on Paddle handle 14 other ends.

A screw rod 16 is vertically arranged at the center of the connecting seat 13, the screw rod 16 can rotate freely relative to the connecting seat 13 but cannot move axially, and a nut 17 is sleeved on the screw rod 16; between the nut 17 and the paddle handle 14 A support rod 18 is provided, one end of the support rod 18 is hinged on the nut 17 , and the other end of the support rod 18 is hinged at the middle part of the paddle handle 14 .

The paddle handle 14 and the paddle 15 constitute a slag removal paddle, and the number of the slag removal paddles is at least three, and the slag removal paddles are evenly distributed in the circumferential direction.

The slag removal paddle is set at an included angle with the horizontal plane, and the included angle ranges from 45° to 90°.

The paddle 15 has an inwardly curved radian ranging from 5° to 30°.

In this embodiment, the number of slag removal paddles is 3, the angle between the slag removal paddles and the horizontal plane is 45°, and the inward curvature of the paddle 15 is 5°, wherein the adjustment of the angle between the slag removal paddles and the horizontal plane The nut 17 can be moved up and down by rotating the screw rod 16, and the position adjustment of the support rod 18 can be realized through the up and down movement of the nut 17, and then the angle adjustment of the slag removal paddle can be realized through the position change of the support rod 18.

The slag removal method using the liquid slag centrifugal type slag remover for steelmaking comprises the following steps:

Step 1: Drive the ladle car or ladle car to the slag removal position;

Step 2: Start the first driving motor 3, drive the screw 2 to rotate through the first driving motor 3, drive the first screw nut 4 and the second screw nut 5 to run downward along the screw 2 through the rotation of the screw 2, and then drive The first lifting arm 6 and the second lifting arm 7 move downward until the centrifugal rake 12 is inserted into the slag in the ladle car or ladle car;

Step 3: Start the second drive motor 8, drive the rotating shaft 9 to rotate at a high speed through the second drive motor 8, and then drive the centrifugal rake 12 to rotate at a high speed, through the high-speed rotation of the centrifugal rake 12, the paddle 15 is continuously taken away from the ladle car or ladle car At the same time, the paddle 15 is always subjected to centrifugal force during the high-speed rotation process. Under the action of centrifugal force, the slag on the paddle 15 is thrown to the inner side wall of the slag collecting cover 10, and the slag reaching the inner side wall of the slag collecting cover 10 is under gravity. Fall into the slag holding tray 11 under the action;

Step 4: After the slag in the ladle car or ladle car is removed, first turn off the second drive motor 8, then start the first drive motor 3 in reverse, and drive the lead screw 2 to rotate in reverse through the first drive motor 3, and pass The reverse rotation of the lead screw 2 drives the first screw nut 4 and the second screw nut 5 to move upward along the lead screw 2, and then drives the first lifting arm 6 and the second lifting arm 7 to move upward until the centrifugal rake 12 is completely lifted off the steel chartered car or hot metal chartered car;

Step 5: Drive the ladle car or ladle car away from the slag removal position;

Step 6: Turn over the slag holding tray 11, pour the slag in the slag holding tray 11 into the waste slag tank, and the slag removal work is completed.

The schemes in the embodiments are not intended to limit the patent protection scope of the present utility model, and all equivalent implementations or changes that do not deviate from the utility model are included in the patent scope of the present case.

Claims (8)

1. the centrifugal slag remover of steel-making liquid slag, it is characterized in that: comprise frame, leading screw, the first drive motors, the first screw, the second screw, the first lifting arm, the second lifting arm, the second drive motors, rotating shaft, Ji Zhagai, Sheng slag pan and centrifugal rake, described leading screw is vertically arranged in frame, described first drive motors is vertically arranged on frame top, the motor shaft of the first drive motors and one end Joint of leading screw, described first screw, the second screw are from top to bottom sleeved on leading screw successively; Described first lifting arm is horizontally disposed with, first lifting arm one end is fixedly connected with the first screw, described second drive motors is vertically arranged on the first lifting arm other end, the motor shaft of the second drive motors and rotating shaft one end Joint, and described centrifugal rake is arranged on the rotating shaft other end; Described Ji Zhagai is positioned at immediately below the second drive motors, and is fixedly connected with the first lifting arm, and described centrifugal rake is positioned at inside collection slag lid; Described second lifting arm is horizontally disposed with, and second lifting arm one end is fixedly connected with the second screw, and described Sheng slag pan is arranged on the second lifting arm other end, contains slag pan and is positioned at immediately below collection slag lid.

2. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 1, is characterized in that: described Sheng slag pan adopts cirque structure, contains slag pan and is connected by trip shaft with between the second lifting arm, and containing slag pan can carry out 360 ° of upsets around trip shaft.

3. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 2, is characterized in that: the internal diameter size of described Ji Zhagai is less than the outside dimension of Sheng slag pan and is greater than the internal diameter size containing slag pan.

4. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 1, it is characterized in that: described centrifugal rake comprises Connection Block, loom and blade, described Connection Block is fixedly connected with rotating shaft, and described loom one end is hinged on Connection Block, and described blade is arranged on the loom other end.

5. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 4, is characterized in that: described Connection Block center vertical is provided with screw rod, and screw rod is free to rotate but axis is immovable relative to Connection Block, and screw rod is set with nut; Between described nut and loom, be provided with support bar, support bar one end is hinged on nut, and the support bar other end is hinged in the middle part of loom.

6. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 4, is characterized in that: described loom and blade form the oar that removes the gred, and the quantity of slagging-off oar is at least 3, and slagging-off oar is circumferential uniform setting.

7. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 6, it is characterized in that: described slagging-off oar is arranged horizontal by angle, angular range is 45 ° ~ 90 °.

8. the centrifugal slag remover of a kind of steel-making liquid slag according to claim 4, is characterized in that: described blade is with interior curved arc degree, and arc range is 5 ° ~ 30 °.