CN108193016B - Intelligent control charging device of horizontal continuous charging electric arc furnace and use method - Google Patents

Abstract

The invention relates to an intelligent control charging device of a horizontal continuous charging electric arc furnace and a using method thereof. The intelligent control feeding device of the horizontal continuous feeding electric arc furnace comprises a raw material feeding device, a high-level storage bin device, a belt conveyor, a mixer, a distributing machine and a control system. This reinforced electric arc furnace intelligence feeding device in succession of level and application method are to the characteristic design of reinforced electric arc furnace in succession of level, the device overall configuration is reasonable, feeding process automation, use computer intelligent system has remote operation, advantages such as degree of automation height reduce manual operation, alleviate workman intensity of labour, improve workman working environment, improve labor efficiency, increase economic benefits, can accurately add the material simultaneously, full automation control, reduce artifical reinforced time delay, productivity gain, there is very big improvement to the quality of product, very high economy and practical value have.

Description

Intelligent control charging device of horizontal continuous charging electric arc furnace and use method

Technical Field

The invention relates to an intelligent control charging device of a horizontal continuous charging electric arc furnace and a using method thereof, belonging to the technical field of electric arc smelting.

Background

At the present stage, the gross of the crude steel develops and presents the characteristics of quick explosion and large scale, the recovery of the scrap steel resource also presents a stage of quick release increase in the future, and the superposition of the quick increase of the scrap steel resource and the fluctuation or slow decrease of the gross of the crude steel is a general probability event, so the scrap steel resource in China tends to be abundant quickly. The scale expansion period of the steel industry in China has already passed, the steel industry is at the peak arc top area stage at present, and according to the international electric arc furnace steel development law, as the steel industry in China further develops to the middle and later stages of the peak area, the proportion of the electric arc furnace steel in China will start to gradually rise. The advantages of short flow, less discharge, small occupied area, low energy consumption and the like of the electric arc furnace are more obvious. China accelerates the promotion of the construction of a green manufacturing system and the establishment of a green factory with the characteristics of intensive land utilization, clean production, waste recycling, low energy carbonization and the like.

At present, in a horizontal continuous charging electric arc furnace in China, manual weighing and manual charging are basically utilized during continuous operation, the charging time interval and the charging weight are greatly influenced by human factors, the increase of production cost and the instability of product quality are easily caused, and in severe cases, the production index cannot meet the process requirement. Secondly, the electric arc furnace is an industrial furnace for smelting ore and metal by utilizing heat generated by the electric arc, energy is concentrated when the electric arc is formed by gas discharge, and the temperature of an arc zone is more than 3000 ℃. Because the operator is very close to the electric furnace, the working environment of the operator is harsh and extremely dangerous. Moreover, the labor intensity of workers is very high, waste and body damage are easily caused, and the production efficiency is reduced.

Chinese patent CN201310453087.3 discloses a complete set of equipment for a rear alloy feeding system of an electric furnace or an electric converter, which has compact mechanism, small occupied area and high automation degree, but when falling, the material can directly impact a device below the equipment, and the equipment is easy to damage. Patent CN201510877669.3 relates to a steel electric furnace feeding device, provides one kind and can feed in to the electric furnace at any time, and the device that feeds in raw materials and control, but it does not have weighing device, can't add to the electric furnace raw materials accurately. Patent CN201720412898.2 discloses an electric stove feeding trolley device, utilizes and feeds dolly and jigging conveyer to send into the electric stove with the material, and wherein, the dolly that feeds is used for bearing and shifts jigging conveyer, and jigging conveyer bears the weight of the material and sends the material into the electric stove, but its degree of automation is lower and can not accurately control the addition of material, need the manual work confirm the dolly of packing into after the material weight, send into the electric stove by the dolly.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems in the prior art, the invention provides the intelligent control feeding device of the horizontal continuous feeding electric arc furnace, which can automatically take and feed materials, control the consumption of the raw materials, fully mix the materials, realize automatic control, greatly save labor force and reduce the production cost.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

an intelligent control feeding device of a horizontal continuous feeding electric arc furnace comprises a raw material feeding device, a high-level bin device, a belt conveyor, a mixer, a distributing machine and a control system, wherein the raw material feeding device is controlled by the control system to transport raw materials into the high-level bin device, the belt conveyor is arranged below the high-level bin device, the output end of the belt conveyor is arranged corresponding to the feed inlet of the mixer, the discharge outlet of the mixer is arranged corresponding to the feed inlet of the distributing machine, the discharge outlet of the distributing machine is arranged corresponding to the horizontal conveying roller way of the electric arc furnace, the high-level bin device comprises a high-level bin, a feeding gate, a weighing hopper, a discharge valve and a buffer ramp, the feed inlet is arranged above the high-level bin, the feeding valve is arranged below the high-level bin, the weighing hopper is arranged below the feeding valve, the buffer ramp is arranged below the weighing hopper, the control system controls the raw material feeding device to put raw materials into the high-level stock bin equipment, and the control system is connected with and controls the opening and closing of the feeding valve and the discharging valve.

The feeding device preferably comprises a manipulator and a bridge crane, the bridge crane is arranged above the raw material storage area and the overhead bunker equipment, and the manipulator is connected with a lifting structure of the bridge crane.

The feeding device is characterized in that a weighing sensor is arranged below the weighing hopper, and the weighing sensor is connected with the control system.

In the feeding device, preferably, an inclination angle of the buffering ramp with the horizontal direction is 30 to 60 °, and a feed opening of the buffering ramp is arranged corresponding to the belt conveyor.

Further, the buffer ramp comprises an upper buffer ramp and a lower buffer ramp which are connected with each other, the inclination angle of the upper buffer ramp and the horizontal direction is 30-60 degrees, and the inclination angle of the lower buffer ramp and the horizontal direction is 25-15 degrees.

The feeding device preferably further comprises a ground bin, and the ground bin is arranged corresponding to the raw material storage place.

Furthermore, the ground stock bin is provided with one or more, and the high-order stock bin is provided with one or more correspondingly.

The feeding device preferably has a level indicator on the inner wall of the high-level storage bin, and the level indicator is connected with the control system

The use method of the intelligent control charging device of the horizontal continuous charging electric arc furnace comprises the following steps:

s1, starting a control system;

s2, conveying the materials to a high-level bin through a raw material feeding device;

s3, feeding the materials in the high-level bin into a weighing hopper through a feeding gate at the lower part of the high-level bin, calculating the raw material ratio of each batching batch according to a batching model in a control system, receiving a signal and controlling the feeding gate to close when the materials in the weighing hopper reach the required weight, opening a discharge valve, and enabling the materials to enter a buffer ramp and fall onto a conveying belt of an opposite belt conveyor;

s4, conveying the materials to a mixer along with the operation of a conveying belt for mixing, distributing the uniformly mixed materials by a distributing machine, feeding the materials into a horizontal roller conveyor, starting the horizontal roller conveyor, and feeding the materials into a horizontal preheating channel of a horizontal continuous charging electric arc furnace.

(III) advantageous effects

The invention has the beneficial effects that:

the intelligent feeding device of the horizontal continuous feeding electric arc furnace, provided by the invention, is provided with the high-level stock bin equipment and the raw material feeding device, can realize automatic feeding, is reasonable in overall configuration and automatic in feeding process, has the advantages of remote operation by using a computer intelligent system, high automation degree and the like, reduces manual operation, lightens the labor intensity of workers, improves the labor environment of the workers, improves the labor efficiency, increases the economic benefit, can accurately feed materials, is automatically controlled in the whole process, reduces the time delay of manual feeding, improves the production efficiency, greatly improves the product quality, and has high economic and practical values.

Drawings

FIG. 1 is a schematic sectional view showing an intelligent control charging device for a horizontal continuous charging electric furnace in example 1 of the present invention;

fig. 2 is a schematic sectional structure view of an intelligent control charging device of a horizontal continuous charging electric furnace in embodiment 2 of the present invention.

[ description of reference ]

1: a manipulator;

2: a bridge crane;

3: an elevated bunker;

4: a feed valve;

5: a weighing hopper;

6: a discharge valve;

7: a buffer ramp;

8: a weighing sensor;

9: a belt conveyor;

10: a ground storage bin;

11: a mixer;

12: a material distributor.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

Example 1

The utility model provides a horizontal continuous charging electric stove intelligent control feeding device, includes: the device comprises a raw material feeding device, high-level bin equipment, a belt conveyor, a mixer, a distributing machine and a control system; raw materials loading attachment is transported the raw materials to high-order feed bin equipment by control system control, high-order feed bin equipment carries out the unloading with the raw materials according to required raw materials quantity, band conveyer locates the below of high-order feed bin equipment, the feed opening of high-order feed bin equipment corresponds band conveyer's conveyer setting, band conveyer's output corresponds the pan feeding mouth setting of blendor, the discharge gate of blendor corresponds the dog-house setting of cloth machine, the raw materials under putting in from high-order feed bin equipment passes through band conveyer and carries to the compounding device in, get into the cloth machine cloth after carrying out the compounding, later get into the horizontal transport roll table, the material gets into the continuous reinforced electric arc furnace level of level and preheats the passageway.

Specifically, as shown in fig. 1, the raw material feeding device can adopt a manipulator 1 and a bridge crane 2, the bridge crane 2 is arranged above the raw material storage area and the high-level storage bin device, and the manipulator 1 is connected with a hoisting structure of the bridge crane 2. The manipulator 1 is controlled by the control system to pick up and release materials, and the bridge crane 2 is controlled by the control system to lift and move the manipulator 1 and move the manipulator to a high-level stock bin from a material storage place.

High-order feed bin equipment includes high-order feed bin 3, feeding gate 4, weighing hopper 5, discharge valve 6 and buffering ramp 7, wherein, high-order feed bin 3's top is equipped with the feed inlet, the below sets up feeding valve 4, feeding valve 6's below is located to weighing hopper 5, weighing hopper 5 is used for receiving the material of transferring in the high-order feed bin 3, buffering ramp 7 connects the below setting of weighing hopper 5, be equipped with discharge valve 6 between weighing hopper 5 and buffering ramp 7, a transfer for the control material. The control system controls the raw material feeding device to put raw materials into the high-level stock bin equipment, and the control system is connected with and controls the opening and closing of the feeding valve and the discharging valve.

And a weighing sensor 8 is arranged below the weighing hopper 5 and is connected with a control system. The weighing sensor converts weight information of the materials in the weighing hopper into signals to be transmitted to the control system, the control system further determines whether to close or continue to open the feeding valve according to whether the acquired weight information reaches the set weight parameters, and when the materials in the weighing hopper reach the set weight parameters, the control system controls the feeding valve to close.

The feed opening of buffering ramp 7 corresponds band conveyer 9 and sets up, and the setting of buffering ramp is to avoid the material from weighing hopper fall directly get into on band conveyer 9's the conveying belt, causes the damage of avoiding to conveying belt, is 30 ~ 60 settings with the inclination of horizontal direction, can make on the slow landing of material conveying belt, effectively prolongs conveying belt's life. Through further experimental study, the buffer ramp is provided with an upper buffer ramp and a lower buffer ramp which are connected with each other, wherein the inclination angle between the upper buffer ramp and the horizontal direction is 30-60 degrees, the inclination angle between the lower buffer ramp and the horizontal direction is 25-15 degrees, and the best effect is achieved.

The material is placed in the raw materials place, for making things convenient for depositing of material, is equipped with ground feed bin 10, the depositing of the material of being convenient for, also the manipulator of being convenient for snatchs the material from fixed position. Manipulator 1 snatchs the material from ground feed bin 10 through bridge crane 2 with the material, remove to high-order feed bin 3, the material gets into high-order feed bin 3 and passes through feed valve 4, weighing hopper 5, discharge valve 6 and buffering ramp 7, fall at band conveyer 9 at last, through band transport to blendor 11, after the blendor 11 mixes, get into the cloth of cloth machine 12 cloth, later get into the horizontal transfer roll table, the material gets into the continuous reinforced electric arc furnace level of level and preheats the passageway, it can automatic reinforced to have realized. The control system comprises a PLC (programmable logic controller) and a PC (computer), wherein the PC is used for displaying the set material parameter amount and the like, and the PLC is used for controlling the actions of a manipulator, a crane, a feeding valve of a high-position stock bin and a discharge valve of a weighing hopper.

The use method of the intelligent control charging device of the horizontal continuous charging electric arc furnace comprises the following steps:

s1, placing the material corresponding program in a specified raw material storage place, and starting a computer control system in a main control room;

s2, conveying different materials stored in the raw material storage place to corresponding high-level bins through a manipulator;

s3, feeding the materials in the high-level bin into a weighing hopper through a feeding gate at the lower part of the high-level bin, calculating the raw material ratio of each batching batch according to a batching model in a control system, outputting a signal to the weighing hopper, receiving the signal and controlling the feeding gate to close by the computer control system when the required weight is reached, opening a discharge valve, and enabling the materials to enter a buffer ramp and fall onto a transmission belt of an opposite belt conveyor;

s4, conveying the materials to a mixer along with the operation of a conveying belt for mixing, distributing the uniformly mixed materials by a distributing machine, feeding the materials into a horizontal roller conveyor, starting the horizontal roller conveyor, and feeding the materials into a horizontal preheating channel of a horizontal continuous charging electric arc furnace.

Example 2

In order to realize accelerating the feeding speed, further improve work efficiency, the embodiment is on the basis of example 1, establish ground feed bin into a plurality ofly, it is equipped with a plurality of high-order feed bins to correspond, all be equipped with the feeding gate under the high-order feed bin, all feeding valves correspond the weighing hopper setting, guarantee that the material can fall into in the weighing hopper after the feeding valve falls, control system is to a ground feed bin corresponds a high-order feed bin setting, the material should be prepared in advance, it puts into appointed corresponding ground feed bin to correspond control system setting corresponding procedure, guarantee that the material matches the setting with control system's batching model, guarantee the quantity accurate control of all materials and used material.

Can satisfy the required material of material loading in order to guarantee the material in the high-order feed bin, be equipped with the charge level indicator at every high-order feed bin inner wall, a volume that whether reaches the settlement for the material in the measurement high-order feed bin, after control system starts, the manipulator is thrown after snatching the material and is put the high-order material, if when the material does not reach the position that sets up the charge level indicator, the charge level indicator feeds back the signal to control system, control system can repetitive operation with the high-order feed bin fill up to the corresponding position of setting for the charge level indicator. When the material reaches the charge level indicator position, the charge level indicator can give control system with signal feedback, control system will start the reinforced or the feeding gate that has the material of adding of next material simultaneously, the material will get into the weighing hopper, when reaching and setting for weight, control system will close the feeding valve, the feed stops toward the weighing hopper in, control system can open the discharge valve, the material gets into the buffering ramp, fall on the transportation belt, through the certain time interval, treat that the material is whole to get off completely, can close the discharge valve. Meanwhile, the control system can control the manipulator to fill the corresponding material in another high-order bin, the control system can control the feeding valve below the corresponding high-order bin at the moment, the material is weighed, after the weighing sensor displays that the material consumption is set, the feeding valve is closed, the discharge valve is opened, the material falls on the conveying belt along the buffering ramp, the conveying belt can be set to operate at different time intervals or pause as required, the material is enabled to fall above the conveying belt, the material cannot fall outside the belt without being stacked, when the required mixed material falls on the conveying belt, the control system starts the conveying belt to convey the material to the mixing machine, and the mixing machine carries out mixed material. Or the conveyer belt always runs and sets up, transports the material to the mixer, according to the settlement of time, after setting for the material all to get into the mixer, the mixer begins work again and mixes the material mixing to this circulation operation realizes reinforced in succession.

The use method of the intelligent control charging device of the horizontal continuous charging electric arc furnace comprises the following steps:

s1, placing the material corresponding program in a designated ground storage bin, and starting a control system;

s2, conveying different materials stored in the ground bins to corresponding different high-level bins through a manipulator;

s3, feeding the materials in the high-level bin into a weighing hopper 7 through a feeding gate at the lower part of the high-level bin, calculating the raw material ratio of each batching batch according to a batching model in a computer control system, outputting a signal to the weighing hoppers of different materials, receiving the signal and controlling the feeding gate to be closed by the computer control system when the required weight is reached, opening a discharging valve, and allowing the materials to enter a buffering ramp and fall onto a conveying belt of an opposite belt conveyor;

s4, conveying the materials to a mixer along with the operation of a conveying belt for mixing, distributing the uniformly mixed materials by a distributing machine, feeding the materials into a horizontal roller conveyor, starting the horizontal roller conveyor, and feeding the materials into a horizontal preheating channel of a horizontal continuous charging electric arc furnace.

The device can realize automatic control continuous feeding, reduces the labor intensity of operators, improves the manual feeding time, improves the labor efficiency and increases the economic benefit.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art can change or modify the technical content disclosed above into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (6)

1. The intelligent control feeding device of the horizontal continuous feeding electric arc furnace is characterized by comprising a raw material feeding device, a high-position bin device, a belt conveyor, a mixer, a distributing machine and a control system, wherein the raw material feeding device is controlled by the control system to transport raw materials into the high-position bin device, the belt conveyor is arranged below the high-position bin device, the output end of the belt conveyor is arranged corresponding to the feed inlet of the mixer, the discharge outlet of the mixer is arranged corresponding to the feed inlet of the distributing machine, the discharge outlet of the distributing machine is arranged corresponding to the horizontal conveying roller way of the electric arc furnace, the high-position bin device comprises a high-position bin, a feed gate, a weighing hopper, a discharge valve and a buffer ramp, the feed inlet is arranged above the high-position bin, the feed valve is arranged below the high-position bin, and the weighing hopper is arranged below the feed valve, the control system controls the raw material feeding device to feed raw materials into the high-level stock bin equipment, and is connected with and controls the opening and closing of the feeding valve and the discharging valve; the inclination angle of the buffer ramp and the horizontal direction is 30-60 degrees, and a feed opening of the buffer ramp is arranged corresponding to the belt conveyor; the raw material feeding device comprises a manipulator and a bridge crane, the bridge crane is arranged above a raw material storage place and the high-level storage bin equipment, and the manipulator is connected with a lifting structure of the bridge crane;

the buffer ramp comprises an upper buffer ramp and a lower buffer ramp which are connected with each other, the inclination angle of the upper buffer ramp and the horizontal direction is 30-60 degrees, and the inclination angle of the lower buffer ramp and the horizontal direction is 25-15 degrees.

2. The charging device according to claim 1, characterized in that a load cell is arranged below said weighing hopper, said load cell being connected to said control system.

3. The charging device according to claim 1, wherein said raw material charging device further comprises a ground bin disposed corresponding to a raw material storage place.

4. The charging device according to claim 3, characterized in that said ground silos are provided with one or more and in correspondence of said elevated silos with one or more.

5. The charging device according to claim 1, wherein a level indicator is arranged on the inner wall of the high-level storage bin, and the level indicator is connected with the control system.

6. Use of the intelligent control charging installation of a horizontal continuous charging electric arc furnace according to any one of claims 1 to 5, comprising the following steps:

s1, starting a control system;

s2, conveying the materials to a high-level bin through a raw material feeding device;

s3, feeding the materials in the high-level bin into a weighing hopper through a feeding gate at the lower part of the high-level bin, calculating the raw material ratio of each batching batch according to a batching model in a control system, receiving a signal and controlling the feeding gate to close when the materials in the weighing hopper reach the required weight, opening a discharge valve, and enabling the materials to enter a buffer ramp and fall onto a conveying belt of an opposite belt conveyor;

s4, conveying the materials to a mixer along with the operation of a conveying belt for mixing, distributing the uniformly mixed materials by a distributing machine, feeding the materials into a horizontal roller conveyor, starting the horizontal roller conveyor, and feeding the materials into a horizontal preheating channel of a horizontal continuous charging electric arc furnace.

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