Device for realizing uniform and efficient multi-ring material distribution of blast furnace and use method

Abstract

The invention discloses a device for achieving uniform and efficient multi-ring material distribution of a blast furnace and a using method, and relates to the technical field of blast furnace equipment.The device comprises a blast furnace body, a discharging hopper, a throttling valve and a chute, the discharging hopper is installed on the blast furnace body, the throttling valve is arranged in the discharging hopper, an auxiliary roller is arranged at the bottom of the discharging hopper, and the chute is arranged below the discharging hopper; one end of the chute is hinged to the side wall of the rotating column through a pin shaft, the bottom end of the rotating column is connected with an output shaft of the motor, the motor is arranged in the paper containing box, the bottom of the chute is hinged to a plunger rod of the driving air cylinder, and a cylinder body of the driving air cylinder is hinged to the side wall of the rotating column through a pin shaft. According to the device for achieving uniform and efficient multi-ring material distribution of the blast furnace and the using method, material distribution action sequence continuity between blast furnace material distribution batches is achieved, more uniform material distribution is guaranteed, the effective control requirement of a blast furnace operator on a material distribution system is met, airflow distribution is effectively controlled, and the device and the using method have great significance in improving the post operation level and improving the blast furnace yield. Fuel consumption is reduced, and the service life of the blast furnace is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace equipment, and in particular to a device and a use method for realizing uniform and efficient multi-ring distribution of a blast furnace. Background Art

[0002] During the blast furnace smelting and operation process, the furnace top charging operation system is one of the most critical steps in the blast furnace smelting process. When there is a problem with the charging system, the entire smelting process will be greatly damaged, the airflow distribution in the furnace will be disrupted, and the smooth operation of the blast furnace will be difficult to maintain. In the blast furnace charging operation, the throttle valve and the chute are important key charging equipment. According to the furnace condition and the needs of the foreman, the two can work together to complete multiple charging forms such as fixed-point charging, single-ring charging, fan-shaped charging, and multi-ring charging. Although this charging control method has basically met the needs, there is still a lot of room for optimization. A variety of control methods can meet charging needs from more aspects. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a device and a method for using the device to achieve uniform and efficient multi-ring distribution of the blast furnace, which realizes the continuity of the distribution action sequence between the blast furnace distribution batches, ensures more uniform distribution of the distribution, meets the blast furnace operation foreman's effective control of the distribution system, and effectively controls the airflow distribution, which is of great significance for improving the job operation level, increasing the blast furnace output, improving the smooth operation, reducing fuel consumption, and extending the life of the blast furnace.

[0004] In order to solve the problems existing in the background technology, the present invention adopts the following technical scheme: it includes a blast furnace body, a discharge hopper, a throttle valve and a chute. The discharge hopper is installed on the blast furnace body, a throttle valve is provided in the discharge hopper, an auxiliary roller is provided at the bottom of the discharge hopper, and a chute is provided below the discharge hopper. One end of the chute is hinged to the side wall of the rotating column through a pin shaft, the bottom end of the rotating column is connected to the output shaft of the motor, the motor is placed in a carton, the bottom of the chute is hinged to the plunger rod of the driving cylinder, and the cylinder body of the driving cylinder is hinged to the side wall of the rotating column through a pin shaft.

[0005] There are six chutes evenly distributed on the outer circumference of the rotating column. Each chute is hinged to the side wall of the rotating column through a pin shaft, and the bottom of each chute is hinged to the side wall of the rotating column through a driving cylinder.

[0006] The chutes are all numbered, and the driving cylinders corresponding to the chutes are also numbered, from one to six.

[0007] A control cabinet is arranged outside the blast furnace body, and the control cabinet is respectively connected with the driving cylinder, the motor and the throttle valve through wires.

[0008] The method of use is: six fixed-point chutes are set in one circle of rotation of the chute, and each time the throttle valve is opened, one to six fixed points are correspondingly discharged in turn, and each half batch of materials is discharged from different chute angles in sequence. Such efficient matching control solves the separation of the action sequence between the two, fully enables the two key equipment to be linked and realizes uniform coordinated control between batches.

[0009] The beneficial effects of the present invention are as follows: starting from the two key equipments of blast furnace charge distribution system control, namely, throttle valve and chute, by optimizing and improving the current charge distribution control program, the problem of separation of the timing of throttle valve and chute action is solved, so that the throttle valve action and the chute angle are efficiently coordinated and matched for control, and the continuity of the charge distribution action sequence between blast furnace charge distribution batches is achieved, ensuring more uniform charge distribution, meeting the effective control needs of blast furnace operation foremen on the charge distribution system, and effectively controlling the airflow distribution, which is of great significance for improving job operation level, increasing blast furnace output, improving smooth operation, reducing fuel consumption, and extending blast furnace life, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a top view of the rotating column of the present invention. DETAILED DESCRIPTION

[0011] Referring to the figures, the present invention specifically adopts the following implementation mode: comprising a blast furnace body 1, a discharge hopper 7, a throttle valve 8 and a chute 2, a discharge hopper 7 is installed on the blast furnace body 1, a throttle valve 8 is arranged inside the discharge hopper 7, an auxiliary roller 9 is arranged at the bottom of the discharge hopper 7, a chute 2 is arranged below the discharge hopper 7, one end of the chute 2 is hinged to the side wall of the rotating column 6 through a pin, the bottom end of the rotating column 6 is connected to the output shaft of the motor 5, the motor 5 is placed in the carton 4, the bottom of the chute 2 is hinged to the plunger rod of the driving cylinder 3, and the cylinder body of the driving cylinder 3 is hinged to the side wall of the rotating column 6 through a pin. There are six chutes 2, which are evenly distributed on the outer circumference of the rotating column 6, each chute 2 is hinged to the side wall of the rotating column 6 through a pin, and the bottom of each chute 2 is hinged to the side wall of the rotating column 6 through a driving cylinder 3. The chutes 2 are all numbered, and the driving cylinders 3 corresponding to the chutes 2 are also numbered, from one to six. A control cabinet is arranged outside the blast furnace body 1, and the control cabinet is connected to the driving cylinder 3, the motor 5 and the throttle valve 8 respectively through wires.

[0012] The method of use is: six fixed-point chutes 2 are set in one circle of rotation of the chute 2, and each time the throttle valve 8 is opened, one to six fixed points are correspondingly discharged in turn, and each half batch of materials is discharged from different chute 2 angles in sequence. Such efficient matching control solves the separation of the action sequence between the two, fully enables the two key equipment to be linked and realizes uniform coordinated control between batches.

[0013] When the device and method for realizing uniform and efficient multi-ring charging of a blast furnace are in use, the control cabinet controls the opening and closing of the throttle valve 8, and the control cabinet controls the motor 5 to work at the same time, and the motor 5 controls the rotation of the rotating column 6 connected thereto, and the rotating column 6 drives the chute 2 thereon to make a circular motion, and the control cabinet can also control the corresponding driving cylinder 3 to work and adjust the angle of the chute 2. There are a total of six chutes 2, numbered from one to six, and the corresponding driving cylinders 3 are also numbered from one to six, and the control cabinet can control the driving cylinders 3 with different numbers to work.

[0014] The present invention mainly starts from the two key core equipments of blast furnace charging control, namely, throttle valve 8 and chute 2, and further optimizes the control idea according to the current control mode. In daily charging operation, multi-ring charging is taken as the core, and the rotation angle of chute 2 is controlled according to the multi-ring charging setting of the material list. The throttle valve opens according to the state of the lower tight valve and the charging opening conditions or the instructions of the foreman. When the throttle valve 8 is opened, the angle of chute 2 is random, that is, the angle is random and not fixed. This situation easily leads to uneven charging, thereby subtly affecting the charging uniformity and airflow distribution. The present invention focuses on solving and improving this problem. Six fixed points are set in one circle of the chute rotation. When the throttle valve is opened each time, one to six fixed points are correspondingly discharged in sequence. Each half batch of materials is discharged from different chute angles in sequence. Such efficient matching control solves the separation of the action timing between the two, fully enables the two key equipment to be linked and realizes uniform and coordinated control between batches.

[0015] Since the six chutes 2 are distributed on the outer circumference of the rotating column 6 and are tightly connected to form a circle, the control cabinet can control the operation of one or several chutes 2, thereby realizing multiple distribution forms such as fixed-point distribution, single-ring distribution, fan-shaped distribution, and multi-ring distribution.

[0016] To sum up, the device and method for using the uniform and efficient multi-ring burden distribution of the blast furnace mainly start from the two key equipments of the blast furnace burden distribution system control, namely, the throttle valve and the chute, and solve the problem of separation of the timing of the throttle valve and the chute action by optimizing and improving the current burden distribution control program, so that the throttle valve action and the chute angle are efficiently coordinated and matched to control, and the continuity of the burden distribution action sequence between the blast furnace burden distribution batches is achieved, ensuring more uniform burden distribution, meeting the effective control needs of the blast furnace operator foreman on the burden distribution system, and effectively controlling the airflow distribution, which is of great significance for improving the job operation level, increasing the blast furnace output, improving the smooth operation, reducing fuel consumption, and extending the life of the blast furnace.

Claims

1. A device for achieving uniform and efficient multi-ring charging of a blast furnace, characterized in that: The invention comprises a blast furnace body (1), a discharge hopper (7), a throttle valve (8) and a chute (2). The discharge hopper (7) is installed on the blast furnace body (1), a throttle valve (8) is arranged in the discharge hopper (7), an auxiliary roller (9) is arranged at the bottom of the discharge hopper (7), a chute (2) is arranged below the discharge hopper (7), one end of the chute (2) is hinged to the side wall of a rotating column (6) through a pin shaft, the bottom end of the rotating column (6) is connected to the output shaft of a motor (5), the motor (5) is placed in a carton box (4), the bottom of the chute (2) is hinged to the plunger rod of a driving cylinder (3), and the cylinder body of the driving cylinder (3) is hinged to the side wall of the rotating column (6) through a pin shaft.

2. The device for achieving uniform and efficient multi-ring charging of a blast furnace according to claim 1, characterized in that: The number of the chutes (2) is six and they are evenly distributed on the outer circumferential surface of the rotating column (6). Each chute (2) is hinged to the side wall of the rotating column (6) via a pin, and the bottom of each chute (2) is hinged to the side wall of the rotating column (6) via a driving cylinder (3).

3. The device for realizing uniform and efficient multi-ring charging of blast furnace according to claim 1 or 2, characterized in that: The chutes (2) are all numbered, and the driving cylinders (3) corresponding to the chutes (2) are also numbered, from one to six.

4. The device for achieving uniform and efficient multi-ring charging of a blast furnace according to claim 1, characterized in that: A control cabinet is provided outside the blast furnace body (1), and the control cabinet is connected to the driving cylinder (3), the motor (5) and the throttle valve (8) respectively through wires.

5. A method for using the device for achieving uniform and efficient multi-ring charging of a blast furnace according to claim 1, characterized in that: Six fixed-point chutes (2) are arranged in one rotation of the chute (2). Each time the throttle valve (8) is opened, one to six fixed points are correspondingly discharged in sequence. Each half batch of materials is discharged from different chutes (2) in sequence. Such efficient matching control solves the separation of the action sequence between the two, fully enables the linkage of the two key devices and realizes uniform coordinated control between batches.

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