Furnace rear pushing type feeding device

Abstract

The utility model provides a furnace back material pushing type feeding device which comprises a support, a material box with the top being of an open structure is arranged on the support, a material pushing plate is arranged in the material box in the width direction of the material box and can move in the length direction of the material box, a discharging port is formed in one end of the material box in the length direction, and a discharging port is formed in the other end of the material box in the length direction. An inclined chute is fixed to the discharging port, the end, close to the material box, of the chute forms a feeding end, and the end, away from the material box, of the chute forms a discharging end. The material pushing plate is arranged in the material box, materials in the material box can be pushed out of the material box and conveyed into a steel ladle through the chute, compared with the mode that materials are fed from a fire blocking door opening behind a furnace, the labor intensity of operators is small, safety and reliability are achieved, the materials can be added along with steel flow in the steel tapping process, and the alloy homogenizing time is shortened; the coal gas flame gun is arranged to preheat the material in advance, so that the temperature of the molten steel is prevented from being reduced after the low-temperature material is mixed with the molten steel; the structure is simple, the use mode is convenient, and the practical space is narrow.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting equipment and relates to a push-type charging device behind a furnace. Background Art

[0002] For new converter steelmaking lines, adding materials such as alloys and lime to the ladle can be done through a high-level silo, weighing silo, collecting silo, feeding pipe, and a rotary chute on the back platform. This is called a straight-through silo addition method, which is relatively convenient. However, older steelmaking lines generally do not have the above-mentioned high-level silo system specifically for feeding the ladle. Some companies use a model with multiple high-level silos, multiple weighing silos, and multiple collecting silo racks on one side of the back platform. The materials are weighed, collected by a small loader or a modified forklift, and then added to the tapered port on the platform. The materials are then added to the ladle through a rotary chute. The disadvantage is that large materials such as high-manganese pig iron cannot be added.

[0003] For enterprises with limited space, it is impossible to install the above equipment. Generally, a trolley is used to add the steel to the ladle under the furnace through the fire-blocking door at the rear of the furnace. Although the deoxidation and alloying process of the steel can be barely completed, there are the following disadvantages: the trolley is weighed and prepared from under the platform, and then the material is put on the platform by a hoist, and then the trolley is pulled to add the material. The labor intensity is high, and it is unsafe to add the material through the fire-blocking door at the rear of the furnace; the material cannot be added with the steel flow during the steel-out process, and it takes a long time to make the alloy uniform. The amount of argon blown at the bottom is too large, the temperature drop is large, and the argon consumption is high. Utility Model Content

[0004] The purpose of the utility model is to provide a rear-furnace push-type charging device to solve the problem in the background technology that a high-storage system cannot be installed in a small factory building and charging is difficult.

[0005] To this end, the present invention adopts the following technical solutions:

[0006] A push-type feeding device behind the furnace includes a bracket, a material box with an open top structure is provided on the bracket, a push plate is provided in the material box along the width direction of the material box, and the push plate can move along the length direction of the material box, and a discharge port is provided at one end of the material box in the length direction, and an inclined chute is fixed at the discharge port, and the end of the chute close to the material box forms a feeding end, and the end away from the material box forms a discharge end.

[0007] Furthermore, a through hole is provided on one side of the material box away from the discharge port, and a hydraulic rod is provided on the bracket which is horizontal and arranged along the length direction of the material box. The hydraulic rod passes through the through hole and is connected to the push plate.

[0008] Furthermore, the push plate is arranged vertically.

[0009] Furthermore, a heating hole is provided on the side wall of the material box, a gas flamethrower is provided in the heating hole, the flamethrower is connected to a gas pipe, and the gas pipe is connected to a gas tank.

[0010] Furthermore, the width of the feed end is greater than the width of the discharge end.

[0011] Furthermore, the chute is 30-60 degrees to the horizontal plane.

[0012] Furthermore, the bracket is provided with two vertically arranged support rods, the top ends of the support rods are connected with pull ropes, and the pull ropes are connected to the discharge end.

[0013] The beneficial effects of the present invention are as follows: a push plate is provided in the material box, which can push the material in the material box out of the material box and transport it to the ladle through the chute. Compared with the method of adding materials from the fire-blocking door hole at the rear of the furnace, the labor intensity of the operator is small, it is safe and reliable, and the material can be added along with the steel flow during the steel tapping process, thereby reducing the alloy uniformity time; a gas flamethrower is provided to preheat the material in advance to prevent the low-temperature material from mixing with the molten steel and lowering the temperature of the molten steel; the structure is simple, the method of use is convenient, and it is practical for use in factories with small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic front view of the structure of the utility model;

[0015] Figure 2 This is a schematic top view of the structure of the present utility model;

[0016] In the figure, 1- bracket, 2- material box, 3- discharge port, 4- push plate, 5- through hole, 6- hydraulic rod, 7- chute, 8- feed end, 9- discharge end, 10- support rod, 11- pull rope, 12- heating hole, 13- gas flamethrower, 14- gas pipe, 15- gas tank. DETAILED DESCRIPTION

[0017] The utility model adopts the following technical solutions:

[0018] like Figure 1 and 2As shown, a rear-furnace push-type feeding device includes a bracket 1, which can be set on the converter platform. The bracket 1 is provided with a material box 2 with an open top structure. The material box 2 is used to place materials such as alloys, lime and larger pig iron blocks. A discharge port 3 is provided at one end of the material box 2 in the length direction, and a push plate 4 is provided in the material box 2 along the width direction of the material box 2. The push plate 4 is vertically arranged, and the push plate 4 can move along the length direction of the material box 2. The material in the material box 2 can be pushed to move and be pushed out from the discharge port 3 through the push plate 4. A through hole 5 is provided on the side of the material box 2 away from the discharge port 3. A hydraulic rod 6 is provided horizontally and along the length direction of the material box 2 on the bracket 1. The hydraulic rod 6 passes through the through hole 5 and is connected to the push plate 4. The push plate 4 can be driven to move back and forth under the action of the hydraulic rod 6. , a chute 7 is fixed with an inclined arrangement at the discharge port 3. In this embodiment, the chute 7 is 30-60 degrees to the horizontal plane. The end of the chute 7 close to the material box 2 forms a feeding end 8, and the end away from the material box 2 forms a discharging end 9. In order to facilitate the transportation of materials, the width of the feeding end 8 is greater than the width of the discharging end 9. The discharging end 9 is located above the ladle. The material pushed out from the discharge port 3 can slide into the ladle through the chute 7. In addition, in order to prevent the chute 7 from bending and deforming under the action of a large external force exerted by the material during the transportation process, two vertically arranged support rods 10 are provided on the bracket 1. The top of the support rod 10 is connected to a pull rope 11. The pull rope 11 can be made of steel wire rope. The pull rope 11 is connected to the discharging end 9 of the chute 7. Tension is applied by the pull rope 11 to prevent the chute 7 from deforming.

[0019] A heating hole 12 is provided on the side wall of the material box 2, and a gas flame gun 13 is provided in the heating hole 12. The gas flame gun 13 is connected to a gas pipe 14, and the gas pipe 14 is connected to a gas tank 15. The gas flame gun 13 can be used to preheat the material in the material box 2 to prevent the addition of low-temperature materials during the steel tapping process from lowering the temperature of the molten steel.

[0020] The usage of this utility model is as follows:

[0021] First, the material to be added to the ladle is transported to the converter platform and then placed in the material box 2. When adding material to the ladle, the material in the material box 2 can be preheated in advance by spraying fire through the gas flamethrower 13. When adding material to the ladle, it is only necessary to start the hydraulic rod 6 to drive the push plate 4 to move toward the discharge port 3, and the material in the material box 2 can be pushed out of the material box 2 from the discharge port 3 and into the chute 7 from the feed end 8. Then, the material can slide out of the chute 7 from the discharge end 9 under the action of gravity and enter the ladle. The operation is simple and convenient. The device is suitable for use in factories with small space. Compared with the method of adding material from the fire-blocking door hole behind the furnace, the labor intensity of the operator is small, safe and reliable, and it can be added along with the steel flow during the steel tapping process, which reduces the alloy uniformity time and has good practical effect.

Claims

1. A push-type charging device behind the furnace, characterized in that: The invention comprises a bracket (1), wherein a material box (2) with an open top is provided on the bracket (1), a push plate (4) is provided in the material box (2) along the width direction of the material box (2), and the push plate (4) can move along the length direction of the material box (2), and a discharge port (3) is provided at one end of the material box (2) in the length direction, and a chute (7) arranged in an inclined manner is fixed at the discharge port (3), and the end of the chute (7) close to the material box (2) forms a feed end (8), and the end away from the material box (2) forms a discharge end (9).

2. A push-type charging device behind the furnace according to claim 1, characterized in that: A through hole (5) is provided on a side of the material box (2) away from the discharge port (3), and a hydraulic rod (6) is provided on the bracket (1) and is arranged horizontally along the length direction of the material box (2). The hydraulic rod (6) passes through the through hole (5) and is connected to the push plate (4).

3. The rear-stage push-type charging device according to claim 1, characterized in that: The push plate (4) is arranged vertically.

4. The rear-stage push-type charging device according to claim 1, characterized in that: A heating hole (12) is provided on the side wall of the material box (2), a gas flamethrower (13) is provided in the heating hole (12), the gas flamethrower (13) is connected to a gas pipe (14), and the gas pipe (14) is connected to a gas tank (15).

5. The rear-end push-type charging device according to claim 1, characterized in that: The width of the feed end (8) is greater than the width of the discharge end (9).

6. The rear-end push-type charging device according to claim 1, characterized in that: The chute (7) is at an angle of 30-60 degrees to the horizontal plane.

7. The rear-end push-type charging device according to claim 1, characterized in that: Two vertically arranged support rods (10) are provided on the bracket (1), and the top ends of the support rods (10) are connected to pull ropes (11), which are connected to the discharge end (9).

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