CN213481046U

CN213481046U - Automatic control device of silicon iron furnace

Info

Publication number: CN213481046U
Application number: CN202021461799.1U
Authority: CN
Inventors: 赵志刚; 韩照日格图; 邸俊明; 牛强
Original assignee: Inner Mongolia Erdos Circular Economic Technology Research And Development Co ltd
Current assignee: Inner Mongolia Erdos Circular Economic Technology Research And Development Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-06-18
Anticipated expiration: 2030-07-22

Abstract

The utility model provides a ferrosilicon stove automatic control device belongs to the hot stove smelting field in ore deposit. The utility model discloses a raw materials conveyor, dosing unit, loading attachment, electrode are pressed and are put device, electrode elevating gear, still include: automatic batching controlling means, automatic feeding controlling means, automatic electrode pressure puts controlling means, automatic electrode lift controlling means and automatic temperature water pressure monitoring alarm device, automatic batching controlling means control dosing unit automatic cycle is joined in marriage the material, automatic feeding controlling means control loading attachment and the reinforced dolly system automatic cycle of annular are reinforced, automatic electrode pressure puts controlling means control electrode pressure and puts device automatic cycle pressure and put, automatic electrode lift controlling means control electrode lift controlling means automatic lift electrode, automatic temperature water pressure monitoring alarm device monitors water pressure and temperature, unusual the warning appears. The utility model discloses realize the full automatic control of ferrosilicon stove, reduce the error that manual operation brought, improve product quality, reduce the cost of labor.

Description

Automatic control device of silicon iron furnace

Technical Field

The utility model relates to a hot stove in ore deposit field of smelting especially relates to a ferrosilicon stove automatic control device.

Background

The common process systems in the ferrosilicon smelting comprise a raw material conveying system, a batching system, a hydraulic system, a tail gas dust removal system and a cooling circulating water system, and most ferrosilicon production enterprises at home and abroad adopt a semi-automatic operation mode. Semi-automation needs manpower to participate, and the smelting operation environment of the ferrosilicon furnace is severe, so that the labor intensity of workers is high, the working environment is severe, the labor efficiency of workers is greatly reduced, and great safety risk is possibly brought.

At present, most of raw material conveying systems adopt a semi-mechanized feeding mode, so that the labor efficiency is low, and the potential safety hazards are high. The raw materials are directly accumulated in a raw material yard after weighing, when the ferrosilicon furnace needs the raw materials, a loader is used for transporting the raw materials such as silica, semi-coke, pellet ore and the like to each wet material bin, and then the raw materials are transported into each ferrosilicon furnace through a belt. The breakage rate is increased when the loader is used for transporting semi-coke raw materials, and the production cost of the ferrosilicon is increased. Meanwhile, the large silica pieces that do not meet the specification are not recycled, resulting in an increase in production cost.

Most of the batching systems adopt a semi-automatic control mode, the charging machine and the discharging machine adopt semi-automatic mode control of manual starting and automatic stopping, the actual material weighing amount and the deviation of a set value are too large, the adding time of various raw materials is also controlled manually, and the quality of the silicon iron can be directly influenced by the raw material proportion and the adding time. Each batch of materials must be added into the furnace after being mixed uniformly according to the proportion, otherwise, the excessive silica or the excessive coke in local areas in the furnace can be caused, the smooth reaction in the furnace is not facilitated, and the furnace condition is deteriorated. In the existing batching system, an instrument worker is required to manually regulate and control batching proportion in real time according to work experience and responsibility, so that batching errors are increased.

The ferrosilicon furnace hydraulic system is a power device for electrode lifting and electrode pressure discharge, data such as electrode time of internal pressure discharge in the industry at present can not be directly reflected in a power distribution computer picture, so that the manual pressure discharge time is required by an instrument worker, the manual work load is increased, misoperation is easily caused by attention reduction, the electrode pressure discharge operation is required to be manually carried out according to the manual pressure discharge time, the pressure discharge of an electrode is a part of vital importance in ferrosilicon generation, and therefore once the pressure discharge time is copied by mistake or the manual operation is wrong, the quality of the ferrosilicon can be greatly reduced.

Most of cooling circulating water systems adopt semi-automatic control, and a large amount of manpower is involved, for example, whether water leakage and temperature are detected needs to be detected by naked eyes, so that a large amount of manpower is consumed, people are required to work nearby a high-heat ferrosilicon furnace, and the environment is severe.

In chinese patent application document CN109974458A, a submerged arc furnace automatic blending, material loading, cloth system and device are disclosed, the below of feed bin is provided with the scale hopper, the below of scale hopper is provided with the compounding belt, the below of the one end blanking mouth of compounding belt is provided with rather than the big inclination belt that combines from top to bottom, the below of the other end of big inclination belt is provided with the reversible movement belt, the below of reversible movement belt is provided with portable belt, the below of portable belt is provided with the furnace roof feed bin, the below of furnace roof feed bin is connected with the unloading pipe, the below and the submerged arc furnace inside UNICOM of unloading pipe, automatic blending, material loading, cloth system are as follows:

(1) the method comprises the following steps that different purchased raw materials are added into different bins through a forklift, a control system drops the raw materials with certain weight into a weighing hopper below the bins according to process requirements and raw material proportion, a blanking valve below the bins is closed after the weight of the dropped materials meets the proportion requirements of the raw materials, a blanking plate below the weighing hopper is opened, the materials in the weighing hopper fall onto a mixing belt below, the belt simultaneously conveys the materials forwards while the materials fall, so that the different materials are mixed, then the mixed materials fall onto a large-inclination-angle belt, and the mixed materials are conveyed onto a reversible moving belt arranged on the top of the submerged arc furnace by the large-inclination-angle belt; (2) the reversible moving belt can convey materials on the belt to two directions of the belt and convey the materials to the movable belt arranged below through the integral movement of the belt, and the movable belt can feed the materials into 10 different furnace top bins arranged at the furnace top through the conveying of the belt and the integral movement of the movable belt; (3) the materials in the furnace top bin are automatically opened by an automatic control system according to the smelting requirement in the furnace, and the materials fall into the submerged arc furnace along the blanking pipe to begin smelting.

In chinese application document CN210753136U, a vibratory feeder is provided below a storage hopper, a raw material discharging chute is provided at a discharging port of the vibratory feeder, a raw material belt conveyor is provided below the raw material discharging chute, a discharging port of the vibratory feeder and a discharging port of the raw material discharging chute are provided with discharging dust-collecting hoods, an upper end of the raw material belt conveyor is connected to a double-layer circular vibrating screen device, a screening dust-collecting hood is provided at an upper portion of the double-layer circular vibrating screen device, a first layer circular vibrating screen and a second layer circular vibrating screen are provided in the double-layer circular vibrating screen device, a large block discharging chute is provided at a side of the first layer circular vibrating screen, the large block discharging chute is connected to a feeding port of a jaw crusher provided below, so that silica entering a ferrosilicon furnace is maintained between 40mm and 180 mm.

The prior art has at least the following disadvantages:

1. the raw materials are weighed and the manual control of unloading is opened and is stopped, does not have the order, causes the compounding inhomogeneous.

2. The material loading manual control opens and stops to the material level in the material pipe of not accurate consideration, causes the stove raw materials inhomogeneous.

3. The manual operation is needed for the electrode pressing and the electrode lifting, so that misoperation is easily caused, and production accidents are caused by repeated pressing.

4. The monitoring of the water leakage of the water way in the ferrosilicon furnace is completely completed by naked eyes.

5. Raw materials which do not meet the specification are not crushed and recycled, so that the raw materials are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic control device of ferrosilicon stove carries out adding of raw materials and unloads according to cycle and predetermined raw materials ratio automatically, and the automatic cycle material loading is pressed from the moving electrode and is put, and the automatic electrode goes up and down, and water pressure, temperature automatic monitoring report to the police, improve the degree of accuracy that the raw materials was weighed, and the batching is accurate, and the compounding is even, and the material loading is even, leaks or the temperature is too high in time report to the police and closes the stove. Full automatic control of whole process to reduce because of artifical the raw materials who participates in and lead to weigh inaccurately, the batching can not go on automatically in cycle, and the compounding is uneven, avoids artifical work under adverse circumstances.

The utility model provides a ferrosilicon stove automatic control device, press including raw materials conveyor, dosing unit, loading attachment, electrode and put device, electrode elevating gear, still include:

the automatic electrode pressure-discharge control device comprises an automatic batching control device, an automatic feeding control device, an automatic electrode pressure-discharge control device and an automatic water temperature and water pressure monitoring alarm device;

the automatic batching control device is used for controlling the batching device to automatically carry out batching according to the period, the automatic batching control device comprises an automatic feeding module and an automatic discharging module, the automatic feeding module controls a feeding machine and a weighing barrel in the batching device to automatically feed materials according to the preset raw material proportion according to the period, and the automatic discharging module controls a discharging machine in the batching device to automatically discharge materials according to the period;

the automatic batching control device is connected with the automatic feeding control device;

the automatic feeding control device comprises an automatic feeding module and an annular feeding trolley system, the automatic feeding module is used for controlling the feeding device and the annular feeding trolley system to automatically feed the ferrosilicon furnace, and the annular feeding trolley system comprises a storage bin, a plurality of feeding trolleys, a plurality of stretching and retracting cylinders and a track;

the automatic electrode pressure-discharge control device is connected with the electrode pressure-discharge device and controls the electrode pressure-discharge device to carry out periodic pressure-discharge according to preset pressure-discharge interval time and pressure-discharge time;

the water temperature and water pressure monitoring and alarming device comprises a monitoring module, an alarming device, a water inlet pipe pressure transmitter, a pressure transmitter at a water return pipe and a temperature transmitter at a water return pipe opening; when the water temperature and the water pressure are abnormal, the alarm device gives an alarm and controls the silicon iron furnace to automatically close the power supply.

Preferably, in a batching cycle, after the weighing of all the storage bins is finished, the automatic batching control device transmits a material weighing end signal to the automatic feeding control device, and the automatic feeding control device controls the following belts to be started in sequence: a feeding small belt, a long inclined belt and a mixing belt.

Preferably, loading attachment includes long oblique belt and material loading small belt, the storage silo of annular charging trolley system is located the terminal below of material loading small belt, the track is located the furnace roof top of ferrosilicon stove, charging trolley is gone along the track forward and reverse, joins in marriage a filling tube in every furnace roof feed bin, and every filling tube is joined in marriage one and is stretched and receive the cylinder, and every filling tube entrance disposes 1 radar level appearance for measure the material level of every filling tube, every stretches to receive and has 2 electromagnetic induction switches on the cylinder, is used for the feedback to stretch and receives the cylinder running position, automatic feeding controlling means control stretch and receive the cylinder for the opening and shutting of control filling tube entry baffle.

2 electromagnetic induction switches are arranged on the stretching cylinder, after the baffle plate is stretched out, a stretching signal is fed back to the automatic control system by the stretching electromagnetic induction switch, and otherwise, the baffle plate is also withdrawn.

Preferably, the automatic control device further comprises an automatic electrode lifting control device, the automatic electrode lifting control device is connected with the electrode lifting device, the electrode lifting device comprises a transformer capable of setting a plurality of transformer gears, and the automatic electrode lifting control device controls the electrode to automatically lift according to a comparison result of an actual current value and a set current upper limit and a set current lower limit.

Preferably, the automatic batching control device is provided with two frequency converters, wherein one frequency converter combining rough and fine given frequencies is connected with all the feeders and controls the feeding frequencies of all the feeders, and the other frequency converter adopting the given frequencies is connected with all the unloaders and controls the unloading frequencies of all the unloaders.

When the frequency control device works, the frequency of the frequency converter is set, the frequency converter of the feeder is controlled, the rough set frequency is 50Hz, and the precise set frequency is 30 Hz; and controlling a frequency converter of the unloader to adopt a given frequency of 0Hz-50 Hz.

Preferably, the automatic feeding control device is connected with the feeding trolley to control the feeding trolley to run forwards and backwards so as to feed materials to the corresponding furnace top bin.

Preferably, the automatic electrode pressure-discharge control device further displays the pressure-discharge countdown time through a computer operation interface.

Preferably, in the batching device, each bin is provided with a feeder, and a plurality of feeders for the same raw material share one weighing barrel, or one feeder is provided with one weighing barrel; the material weighing device is characterized in that the unloading machines are arranged below the material weighing barrels, one unloading machine is matched with one material weighing barrel, and a material mixing belt shared by a plurality of unloading machines is arranged below all the unloading machines.

Preferably, the screening and recycling device is arranged in a raw material conveying device of the ferrosilicon furnace, and is provided with a circular vibrating screen device and a first discharging belt.

Preferably, the circular vibrating screen device is arranged below the tail end of a large-inclination-angle belt in the raw material conveying device, and raw materials directly fall onto the circular vibrating screen device from the large-inclination-angle belt for screening;

a first discharging belt is arranged below the circular vibrating screen device and connected with a ball press;

one side of the circular vibrating screen device is connected with one end of a second discharging belt, the other end of the second discharging belt is connected with a crusher, an outlet of the crusher is connected with a rotating belt, and the other end of the rotating belt is connected with a ball press machine.

During operation, automatic blending controlling means is used for controlling dosing unit's work, automatic blending controlling means is connected with feeder, title storage bucket and unloader respectively to be connected with the compounding belt. The automatic batching control device is used for setting the proportion of various raw materials, transmitting the calculated mass of various raw materials to each group of the feeder, the weighing barrel and each unloader, and controlling each group of the feeder and the weighing barrel to automatically weigh the raw materials according to a set sequence; after all material weighing in each period is finished, the automatic batching control device transmits a material weighing finishing signal to the automatic feeding control device, and the feeding control device is started in sequence as follows: the automatic material mixing device comprises a material loading trolley, a long inclined belt and a material mixing belt, wherein each belt rings for 10 seconds before being started, after the material mixing belt is started, a belt starting end signal is sent to the automatic material mixing control device, and after the automatic material mixing control device receives the belt starting end signal, each unloading machine is controlled to automatically unload materials according to a set sequence; and after the weighing and the discharging in each period are completed, the automatic batching control device controls the batching device to carry out periodic batching according to set conditions.

In operation, the automatic batching control device sets the sequence of weighing and discharging and the time delay between each operation. After the automatic batching control device manually sets the proportion of various raw materials, a program can automatically control and start each group of feeders and weighing buckets corresponding to the silica storage bin and the pellet storage bin to weigh silica and pellets, the starting time delay of each group of feeders and weighing buckets is T1, T1 is preset time, and when the silica and pellet weighing is finished, the corresponding weighing buckets feed back a weighing finishing signal to the automatic batching control device; in order to realize full-automatic high-precision batching, the granularity of the raw materials is required to be as follows: the granularity of the silica is 40-100mm, the granularity of the semi-coke is 15-35mm, and the granularity of the pellet is 5-20 mm.

The automatic batching control device calculates the required semi-coke weighing amount according to the actual weighing amount and the ratio of the silica and the pellet, gives the calculation result to a semi-coke weighing set value, starts a feeder and a weighing barrel corresponding to the first semi-coke storage bin after the set delay time T2, and starts to automatically weigh according to the set weighing amount; the starting time of the feeder and the weighing barrel of each group of semi-coke storage bins is the delay set time T1;

after the material weighing of all the storage bins is finished, feeding back the material weighing finishing signals of all the material weighing buckets to the automatic material distribution control device, transmitting the material weighing finishing signals to the automatic material feeding control device by the automatic material distribution control device, and starting the material feeding control device in sequence as follows: the automatic material loading device comprises a material loading trolley, a long inclined belt and a material mixing belt, wherein each belt rings for 10 seconds before starting, after the material mixing belt is started, a belt starting end signal is sent to the automatic material mixing control device, after the automatic material mixing control device receives the belt starting end signal, after set delay time T3, the automatic material mixing control device controls to start automatic material unloading, the material unloading of each storage bin is carried out according to the material weighing sequence, the unloading starting time between each group of silica and pellet storage bins is interval delay set time T4, after all the silica and pellet storage bins are unloaded, the interval delay set time T5 starts the unloading of the semi-coke storage bins, and the unloading interval delay of each group of semi coke storage bins is set time T6.

During operation, each feeder is controlled to start and stop by the start-stop condition set in the automatic batching control device, and the start-stop condition of the feeder is related to the following factors: whether a material bin is selected, the state of the unloading machine corresponding to the charging machine, the quality of the raw materials in the weighing barrel corresponding to the charging machine and a charging end mark are selected;

preferably, the automatic batching control device starts the feeder when the following conditions are met, wherein the conditions comprise:

1A, selecting a material weighing bin according to the feeding requirement; for example: the silica silo needs to be selected when the silica is required to be weighed;

1B, the unloader corresponding to the feeder is in a shutdown state;

1C, marking the feeding end marks of all the bins as negative; the silica feeding ending signal is that the actual weighing amount of the silica is more than or equal to the set value of the silica minus 5Kg, the semi-coke feeding ending signal is that the actual weighing amount of the semi-coke is more than or equal to the set value of the semi-coke minus 2Kg, and the pellet feeding ending signal is that the actual weighing amount of the pellet is more than or equal to the set value of the pellet minus 3 Kg;

1D, the material amount in a material weighing barrel corresponding to the feeder is required to be less than or equal to 2 Kg; otherwise, the program determines that the bin is not discharged in the last charging period, and the discharging is not finished and the weighing is not allowed.

Each unloader is started and stopped by the start-stop condition control that sets for in the automatic blending control device, the unloader start-stop condition is relevant with following factor: whether a storage bin, the state of the charging machine corresponding to the unloading machine, a charging end mark and a belt running state are selected;

preferably, the automatic batching control device starts the unloader when the following conditions are met, wherein the conditions comprise:

2A, selecting a discharging bin according to a discharging requirement; for example: a silica silo needs to be selected when the silica is unloaded;

2B, the charging machine corresponding to the unloading machine is in a shutdown state;

2C, marking the feeding end marks of all the bins as yes; the silica feeding ending signal is that the actual weighing amount of the silica is more than or equal to the set value of the silica minus 5Kg, the semi-coke feeding ending signal is that the actual weighing amount of the semi-coke is more than or equal to the set value of the semi-coke minus 2Kg, and the pellet feeding ending signal is that the actual weighing amount of the pellet is more than or equal to the set value of the pellet minus 3 Kg;

2D, all the belts are in a running state.

In the process of unloading, the weighing cylinder shifts or the zero drift of the weighing sensor can cause the phenomenon that data cannot return to zero, in order to avoid the phenomenon, in the unloading process, when the actual material quantity in the weighing cylinder is less than 3Kg, the unloader is immediately and automatically stopped, and after the actual material quantity in the weighing cylinder is less than 8Kg and continues the pulse drive for 8 seconds, the program can automatically execute the command of stopping the unloader, and the program can be determined as the end of unloading. In order to avoid the program confusion, the charging machine is not allowed to be started in the discharging process, and the discharging machine is not allowed to be started in the charging process.

The feed opening of the batching device is connected with the feeding device; the automatic batching control device is connected with the automatic feeding control device. When the automatic batching control device works, the batching device is controlled by the automatic batching control device to finish the weighing and the unloading of each period.

When the automatic feeding device works, the automatic feeding control device compares the material levels of all the feeding pipes, and automatically feeds materials according to the sequence of the material levels from low to high, and the automatic feeding control device controls the opening and closing of the baffle plate of the feeding pipe opening to feed materials by controlling the stretching cylinder in the selected feeding pipe to automatically stretch and stretch;

when the automatic feeding control device works, the automatic feeding control device controls the feeding trolley to run forwards and backwards according to the running position of the feeding trolley and the position of the selected feeding pipe; the automatic feeding control device controls the feeding trolley to automatically carry out forward or reverse running according to the running position of the feeding trolley and the position of the selected feeding pipe, when the running position of the feeding trolley is larger than the position of the selected feeding pipe, the automatic feeding control device controls the feeding trolley to run reversely, and when the running position of the feeding trolley is smaller than the position of the selected feeding pipe, the automatic feeding control device controls the feeding trolley to run forwards, the automatic feeding control device controls the feeding trolley to switch forwards and reversely, and sets the switching interval time T7, so that the damage of the motor caused by large current when the feeding trolley is not switched in a delayed mode is avoided.

When the automatic electrode pressure-releasing control device works, the pressure-releasing time and the pressure-releasing interval time are set by the automatic electrode pressure-releasing control device, and the electrode pressure-releasing device is controlled to perform periodic pressure-releasing according to the pressure-releasing time and the pressure-releasing interval time;

preferably, the automatic electrode pressure-discharge control device controls the electrode pressure-discharge device to operate according to the following modes:

3A, setting the pressure-release time and the pressure-release interval time;

3B, when the pressure relief countdown time is up, sequentially loosening, ascending and descending each pressure relief oil cylinder according to the set bin pressure relief sequence and the set pressure relief time;

3C, after each pressure release is finished, starting to count down the 2 nd period according to the set pressure release interval time;

and 3D, before the countdown time is not reached, if the press button is manually pressed, the automatic electrode press control device receives a press button pressed signal, controls the press button to automatically bounce, and displays alarm information on an interface.

When the automatic electrode lifting control device works, a plurality of groups of primary current upper and lower limits are set by the automatic electrode lifting control device, and the electrode lifting device is controlled to lift or lower the electrode according to the comparison result of the actual current value and the set current upper and lower limits; when the current respectively exceeds the upper limit of each group of current, the automatic electrode lifting control device controls the electrode lifting device to lift the electrode until the electrode current recovers to a normal interval to stop lifting, in an automatic electrode lifting control device system, the lifting of a primary electrode is adjusted by 50mm at most, if the electrode current is adjusted for the first time and is not adjusted to the normal interval, the time is delayed for 3 seconds after the adjustment for the first time, the lifting for the 2 nd time is automatically carried out, and if the electrode current is not recovered to the normal interval for the second time, the automatic electrode lifting control device sends a transformer gear adjusting instruction to the transformer to adjust the electrode current at the moment so as to control the electrode current; when the current exceeds the lower limit of each group of current respectively, the automatic electrode lifting control device controls the electrode lifting device to lift the electrode, and the transformer is lifted by one gear. For example, when the transformer is operated in 10 th gear, the upper limit of the 10 th gear current is 208A, the lower limit is 175A, and the actual current exceeds the upper limit, the electrode automatically starts to be lifted to the current recovery normal interval. When the actual current is less than the upper limit and the lower limit, the electrode automatically begins to drop to a current recovery normal interval.

When the automatic water temperature and water pressure monitoring alarm device works, the monitoring module in the automatic water temperature and water pressure monitoring alarm device judges whether water leaks or not according to the measured values of the pressure transmitter at the water inlet pipe and the pressure transmitter at the water outlet pipe, when the measured value of the pressure transmitter of the water return pipe is smaller than the measured value of the pressure transmitter of the water inlet pipe, the water leakage is judged, at the moment, the alarm device in the automatic water temperature and water pressure monitoring device gives an alarm, and the ferrosilicon furnace is controlled to be powered off immediately;

automatic among the water temperature water pressure monitoring alarm device monitoring module still basis temperature transmitter's measured value judges whether the temperature is unusual, works as when temperature transmitter's measured value is higher than the settlement temperature value, judges for the temperature is unusual, this moment automatic among the water temperature water pressure monitoring device alarm device sends out the police dispatch newspaper, and control the ferrosilicon stove closes the power immediately.

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

(1) the utility model discloses by the feeder that every storage silo of automatic blending controlling means according to the storage silo sequential control of setting for corresponds, title storage bucket and unloader according to the automatic title material of title material value according to the setting for of raw materials ratio calculation result and unload, realized that the batching is accurate, the compounding is even, carries out the effect of batching according to the cycle automatically, has further improved production efficiency and ferrosilicon quality.

(2) The utility model discloses by automatic feeding controlling means control annular material loading dolly system, according to the position of the operation position of reinforced dolly and selected filling tube, the reinforced dolly forward of control or reverse travel, carry out the material loading according to the filling tube material level by low order to high, the material pipe material level is low preferentially reinforced, has realized the even effect of stove mixed raw materials, has improved the ferrosilicon quality.

(3) The utility model judges whether water leakage occurs through the automatic water temperature and water pressure monitoring alarm device according to the measured value of the pressure transmitter at the water return pipe and the pressure transmitter at the water inlet pipe, if water leakage occurs, the high-voltage power supply of the silicon iron furnace is immediately alarmed to be automatically cut off; and the measured value of the temperature transmitter at the water return pipe is compared with a set value, whether the temperature is abnormal or not is judged, if the temperature is abnormal, the ferrosilicon furnace immediately alarms, the automatic monitoring and alarm of water leakage and temperature abnormality are realized, and even a small amount of water leakage can be timely found.

(4) The utility model discloses a set up circle sieve, breaker and the rotary belt that shakes in raw materials conveyer, sieve the raw materials to carry out the breakage to big specification raw materials, then retrieve, both realized that the specification of raw materials is injectd, realized the make full use of raw materials again, greatly reduced manufacturing cost, when reducing silicon iron production unit consumption, improve silicon iron output quality.

Drawings

FIG. 1 is a schematic view of a dispensing unit of embodiment 1 of the present invention;

FIG. 2 is a schematic view of an embodiment 2 of the dispensing unit of the present invention;

FIG. 3 is a schematic view of the raw material transportation device of the present invention;

FIG. 4 is a schematic view of the feeding device and the annular feeding trolley system of the present invention;

FIG. 5 is a schematic view showing the control and connection relationship between the automatic control device and each device according to the present invention;

FIG. 6 is a schematic view of the process flow of raw material transportation, blending and loading in practical application of the present invention;

the specific meanings of the symbols in the drawings are as follows:

wherein, 1-silica storage silo 1#, 2-silica storage silo 2#, 3-silica storage silo 3#, 4-silica storage silo 4#, 5-blue charcoal storage silo 1#, 6-blue charcoal storage silo 2#, 7-blue charcoal storage silo 3#, 8-blue charcoal storage silo 4#, 9-pellet storage silo 1#, 10-pellet storage silo 2#, 11-spare storage silo 1#, 12-spare storage silo 2#, 13-feeder, 14-weighing barrel, 15-unloader, 16-mixing belt, 17-feed opening, 18-blue charcoal field, 19-bin lower belt, 20-silica field, 21-circular vibrating screen device, 22-ball press, 23-crusher, 24-large-inclination belt, 25-first discharge belt, 26-a second discharging belt, 27-a small feeding belt, 28-a storage bin, 29-a feeding trolley, 30-a furnace top bin, 31-a feeding pipe, 32-a radar level gauge and 33-a telescopic cylinder.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 6.

the automatic batching control device is used for controlling the batching device to carry out automatic periodic batching, and comprises an automatic feeding module and an automatic discharging module, wherein the automatic feeding module controls a feeding machine and a weighing barrel in the batching device to automatically feed materials according to a preset raw material proportion in a periodic manner, and the automatic discharging module controls a discharging machine in the batching device to automatically discharge materials according to a period;

the automatic feeding control device comprises an automatic feeding module and an annular feeding trolley system, the automatic feeding module is used for controlling the feeding device and the annular feeding trolley system to automatically and periodically feed the ferrosilicon furnace, and the annular feeding trolley system comprises a storage bin, a plurality of feeding trolleys, a plurality of stretching and retracting cylinders and a track;

the water temperature and water pressure monitoring and alarming device comprises a monitoring module, an alarming device, a water inlet pipe pressure transmitter, a pressure transmitter at a water return pipe and a temperature transmitter at a water return pipe opening; when the water temperature and the water pressure are abnormal, the alarm device gives an alarm and controls the ferrosilicon furnace to turn off the power supply.

As a preferred embodiment, in one cycle, after the weighing of all the storage bins is finished, the automatic batching control device transmits a material weighing finishing signal to the automatic feeding control device, and the automatic feeding control device controls the following belts to be started in sequence: a feeding small belt, a long inclined belt and a mixing belt.

As the preferred embodiment, loading attachment includes long oblique belt and material loading small belt, the storage silo of annular charging trolley system is located the terminal below of material loading small belt, the track is located the furnace roof top of ferrosilicon stove, the charging trolley is gone along track forward and reverse, joins in marriage a filling tube in every furnace roof feed bin, and every filling tube is joined in marriage one and is stretched out and receive the cylinder, and every filling tube entrance disposes 1 radar level appearance for measure the material level of every filling tube, has 2 electromagnetic induction switches on every stretching out and receiving the cylinder for the feedback stretches out and receives the cylinder operating position, automatic feeding controlling means control stretch out and receive the cylinder for the opening and shutting of control filling tube entrance baffle.

As a preferred embodiment, the automatic control device further includes an automatic electrode lifting control device, the automatic electrode lifting control device is connected to the electrode lifting device, the electrode lifting device includes a transformer capable of setting a plurality of transformer gears, and the automatic electrode lifting control device controls the electrode to automatically lift according to a comparison result between an actual current value and a set upper and lower current limit.

In a preferred embodiment, the automatic batching control device is provided with two frequency converters, wherein one frequency converter combining rough and fine given frequencies is connected with all the feeders and controls the feeding frequencies of all the feeders, and the other frequency converter adopting the given frequencies is connected with all the unloaders and controls the unloading frequencies of all the unloaders.

As a preferred embodiment, the automatic feeding control device is connected with the feeding trolley to control the feeding trolley to run in the forward and reverse directions, so as to realize feeding for a corresponding furnace top bin.

In a preferred embodiment, the automatic electrode discharge control device further displays a discharge countdown time through an interface.

In a preferred embodiment, each bin of the batching device is provided with one feeder, and a plurality of feeders for the same raw material share one weighing barrel, or one feeder is provided with one weighing barrel; the material weighing device is characterized in that the unloading machines are arranged below the material weighing barrels, one unloading machine is matched with one material weighing barrel, and a material mixing belt shared by a plurality of unloading machines is arranged below all the unloading machines.

As a preferred embodiment, the device further comprises a screening and recycling device, wherein the screening and recycling device is positioned in a raw material conveying device of the ferrosilicon furnace, and the screening and recycling device is provided with a circular vibrating screen device and a first discharging belt.

As a preferred embodiment, the circular vibrating screen device is arranged below the tail end of a large-inclination-angle belt in the raw material conveying device, and raw materials directly fall onto the circular vibrating screen device from the large-inclination-angle belt for screening;

In operation, the automatic batching control device sets the sequence of weighing and discharging and the time delay between each operation. After the automatic batching control device manually sets the proportion of various raw materials, a program can automatically control and start each group of feeding machines and weighing buckets corresponding to the silica storage bin and the pellet storage bin to weigh silica and pellets, the starting time delay of each group of feeding machines and weighing buckets is T1, T1 is preset time, and when the silica and pellet weighing is finished, the corresponding weighing buckets feed back a weighing finishing signal to the automatic batching control device. In order to realize full-automatic high-precision batching, the granularity of the raw materials is required to be as follows: the granularity of the silica is 40-100mm, the granularity of the semi-coke is 15-35mm, and the granularity of the pellet is 5-20 mm.

after the material weighing of all the storage bins is finished, feeding back the material weighing finishing signals of all the material weighing buckets to the automatic material distribution control device, transmitting the material weighing finishing signals to the automatic material feeding control device by the automatic material distribution control device, and starting the material feeding control device in sequence as follows: the automatic material-mixing device comprises a feeding trolley, a long inclined belt and a material-mixing belt, wherein after the material-mixing belt is started, a belt starting end signal is sent to the automatic material-mixing control device, after the automatic material-mixing control device receives the belt starting end signal, after a set delay time T3, the automatic material-mixing control device controls the automatic material-mixing control device to start automatic discharging, discharging of all storage bins is carried out according to the material weighing sequence, the discharging starting time among all groups of silica and pellet storage bins is interval delay set time T4, after all silica and pellet discharging is finished, discharging of a semi-coke storage bin is started at interval delay set time T5, and discharging intervals of all groups of semi-coke storage bins are delayed for set time T6.

as a preferred embodiment, the automatic batching control device starts the feeder when the following conditions are met, wherein the conditions comprise:

1B, the unloader corresponding to the feeder is in a shutdown state;

in a preferred embodiment, the automatic batching control device starts the unloader when the following conditions are met, wherein the conditions comprise:

2D, all the belts are in a running state.

when the automatic feeding control device works, the automatic feeding control device controls the feeding trolley to run forwards and backwards according to the running position of the feeding trolley and the position of the selected feeding pipe; the automatic feeding control device controls the feeding trolley to automatically carry out forward or reverse running according to the running position of the feeding trolley and the position of the selected feeding pipe, when the running position of the feeding trolley is larger than the position of the selected feeding pipe, the automatic feeding control device controls the feeding trolley to run reversely, when the running position of the feeding trolley is smaller than the position of the selected feeding pipe, the automatic feeding control device controls the feeding trolley to run forwards, the automatic feeding control device controls the feeding trolley to switch between the forward direction and the reverse direction automatically, and the switching interval time is set to be T7.

as a preferred embodiment, the automatic electrode pressure discharge control means controls the operation of the electrode pressure discharge means according to:

3A, setting the pressure-release time and the pressure-release interval time;

When the automatic electrode lifting control device works, a plurality of groups of primary current upper and lower limits are set by the automatic electrode lifting control device, and the electrode lifting device is controlled to lift the electrode or lower the electrode according to the comparison result of the actual current value and the set current upper and lower limits; when the current respectively exceeds the upper limit of each group of current, the automatic electrode lifting control device controls the electrode lifting device to lower the electrode, and the transformer is lowered by one gear; when the current exceeds the lower limit of each group of current respectively, the automatic electrode lifting control device controls the electrode lifting device to lift the electrode, and the transformer is lifted by one gear. During normal production of the silicon-iron furnace, the transformer gear is usually operated at 10 gears, but when a process emergency occurs, the control of the electrode current and voltage must be realized by adjusting the transformer gear. Setting the upper and lower limits of the sets of primary currents here widens the range of operation.

Example 1

The following is an example of the process of automatic batching by the automatic batching control device according to the period.

Set up the storage silo at the batching plant, the storage silo includes 4 silica feed bins, 4 blue charcoal feed bins and 2 pelletizing ore bins, is equipped with two reserve feed bins, and reinforced bobbing machine is chooseed for use to the feeder, and the bobbing machine of unloading is chooseed for use to the unloader. 1 feeding vibrating machine is arranged below each silica silo, each 2 feeding machines are provided with a material weighing barrel, and each material weighing barrel is provided with 1 discharging vibrating machine.

The following explains the example of 64% of the mixture ratio in detail that the automatic batching control device controls the automatic periodic batching. The mixture ratio of each raw material is as follows: the total silica was set to 500Kg, the silica # 1 bin to 200Kg, the silica # 2 bin to 100Kg, the silica # 3 bin to 100Kg, and the silica # 4 bin to 100 Kg; the total volume of the semi-coke is set to 320Kg, the volume of a semi-coke 1# bin is set to 80Kg, the volume of a semi-coke 2# bin is set to 80Kg, the volume of a semi-coke 3# bin is set to 80Kg, and the volume of a semi-coke 4# bin is set to 80 Kg; the total volume of the pellet is set to be 120Kg, the volume of the pellet 1# bin is set to be 60Kg, and the volume of the pellet 2# bin is set to be 60 Kg.

The feeding vibrator and the discharging vibrator are controlled by frequency converters, the frequency converter for controlling the feeding vibrator is controlled by coarse and fine frequency control, the coarse frequency is set to be 50Hz, the fine frequency is set to be 30Hz, the frequency converter for controlling the discharging vibrator is set by analog quantity of 0-50Hz, the discharging speed is higher, but the discharging frequency is too high, so that the service life of the discharging vibrator is shortened, and meanwhile, certain risks are increased to the stable operation of equipment, so that the frequency converter output frequency of the silica discharging vibrator is generally controlled to be 32Hz according to the actual process production conditions, the frequency converter output frequency of the blue carbon discharging vibrator is controlled to be 30Hz, the frequency converter output frequency of the pellet discharging vibrator is controlled to be 25Hz, and three raw materials after discharging are uniformly distributed on a mixing belt.

Firstly, the automatic batching control device judges the starting condition of the charging vibrator, if the starting condition is met, starting 4 silica feeding vibration machines and 2 pellet feeding vibration machines in sequence, starting automatic weighing according to the set weighing amount, starting the 1# silica feeding vibration machines and the 3# silica feeding vibration machines in sequence, adding 200KG to the 1# silica, when 150KG is added, the coarse feed is changed into the fine feed, the total amount of 3# silica is added with 100KG, when 50KG is added, the rough feeding is changed into the fine feeding, after the feeding of the 1# silica and the 3# silica is finished, a feeding end signal is fed back to the automatic batching control device, the 2# silica and the 4# silica feeding vibrating machines are started simultaneously, the total amount of the 2# silica is added with 100KG, when 50KG was added, the crude feed was changed to the fine feed, the total amount of 4# silica was 100KG, when 50KG was added, the crude feed was changed to the fine feed, feeding back a feeding end signal to the batching control device when the feeding of the 2# silica and the 4# silica is finished. The silica storage bin adopts the charging process of a single weighing barrel with double material bins. The charging sequence of the pellets is that a 1# pellet charging vibrating machine is started, 60KG is added to the 1# pellet in total, when 30KG is added, rough feeding is changed into fine feeding, 60KG is added to the 2# pellet in total, when 30KG is added, rough feeding is changed into fine feeding, when weighing of silica and the pellets is finished, a weighing end signal is fed back to an automatic batching control device, and in consideration of the fact that the granularity of the silica is not controlled, the silica and the pellets are weighed firstly, the actual values of the silica and the pellets are multiplied by a ratio to be a set value of semi-coke, so that the automatic batching control device automatically calculates the required weighing amount of the semi-coke according to the actual weighing amount of the silica and the ratio, the calculation result is given to a set value of the semi-coke weighing, 4 semi-coke charging vibrating machines are started in sequence, automatic weighing is started according to the set weighing amount, and the 1# semi-coke charging vibrating machine and the 3# semi-coke charging vibrating machine are started simultaneously, 1# blue charcoal adds 80KG in total, when adding 50KG, give by thick and become to give for smart, 3# blue charcoal adds 80KG in total, when adding 50KG, give by thick and become to give for smart, give for automatic blending controlling means after 1# blue charcoal and 3# blue charcoal are reinforced, 2# blue charcoal and 4# blue charcoal reinforced bobbing machine start simultaneously, 2# blue charcoal adds 80KG in total, when adding 50KG, give by thick and become for smart, 4# blue charcoal adds 80KG in total, when adding 50KG, give by thick and become for smart, give by thick and give for smart, give automatic blending controlling means after 2# blue charcoal and 4# blue charcoal finish feedback feed back finished signal. Weighing the 1# silica and the 3# silica simultaneously, and starting automatic transfer of the 2# silica and the 4# silica when the actual weighing amount of the 1# silica is less than or equal to the set value of the 1# silica minus 8Kg (starting to weigh the 2# silica and the 4# silica according to the set values). And (3) simultaneously weighing the 1# semi-coke and the 3# semi-coke, and starting to automatically transfer the 2# semi-coke and the 4# semi-coke when the actual weighing amount of the 1# semi-coke is less than or equal to the set value of the 1# semi-coke minus 5Kg (the 2# semi-coke and the 4# semi-coke are weighed according to the set value after the automatic transfer according to the set value). When the material of the No. 1 pellet is weighed, when the actual material weighing amount of the No. 1 pellet is less than or equal to the set value of the No. 1 pellet minus 6Kg, the No. 2 pellet is automatically transferred to the bin. Each raw material weighed can be automatically popped out of the feeder to feed the finished signal under the selective feeding bin, and the silica, semi-coke and pellet bins are the same, and so on. When all three raw materials are weighed according to set values, the automatic discharging condition is met only by a feeding end mark.

After all feed bins weigh material end signal and all feed back and give automatic blending controlling means, automatic blending controlling means will weigh material end signal and pass to automatic feeding controlling means, the following belt of start-up order is followed to feeding controlling means, and 10 seconds of jingle bell before every belt starts, the start-up order is: the automatic material distribution control device controls the 1# silica unloading vibrator to automatically start and unload after receiving the belt starting end signal, the 2# silica unloading vibrator automatically starts unloading after the 1# silica unloading vibrator operation signal is fed back and delays for 4 seconds, the 1# blue carbon unloading vibrator automatically starts unloading after the 2# silica unloading vibrator operation signal is delayed for 4 seconds, the 1# blue carbon unloading vibrator automatically starts unloading after the 1# blue carbon unloading vibrator operation signal is fed back and delays for 4 seconds, and after all the bins are completely unloaded, when the actual material amount is less than 3Kg or the actual material amount is less than 8Kg, the discharging is finished after the 8-second pulse driving is carried out, and the discharging vibrator is automatically stopped. The charging period is from the beginning of charging to the end of discharging. After the time delay of 1 second, the automatic batching control device automatically controls the batching device to carry out the automatic batching of the next period.

Example 2

The following is a process example of configuring a single charging barrel process for a single bin of a ferrosilicon furnace batching system, automatically batching by an automatic batching control device according to a period,

set up the storage silo at the batching plant, the storage silo includes 4 silica feed bins, 4 blue charcoal feed bins and 2 pellet ore storehouses, is equipped with two reserve feed bins, in this embodiment, every storage silo below configuration 1 reinforced bobbing machine, 1 title feed cylinder, 1 bobbing machine of unloading.

The same bin arrangement, raw material ratio and material weighing as in example 1, 200Kg for the 1# silica bin, 100Kg for the 2# silica bin, 100Kg for the 3# silica bin, 100Kg for the 4# silica bin, 60Kg for the 1# pellet bin and 60Kg for the 2# pellet bin were weighed as follows.

Firstly, starting 4 silica feeders and 2 pellet feeders in sequence, starting automatic weighing according to a set weighing amount, adding 200KG to 1# silica, and changing coarse feeding into fine feeding when adding 150 KG; the total amount of 2# silica is added with 100KG, and when 50KG is added, the coarse feeding is changed into the fine feeding; the total amount of 3# silica is added with 100KG, and when 50KG is added, the coarse feeding is changed into the fine feeding; the total amount of 4# silica is added with 100KG, and when 50KG is added, the coarse feeding is changed into the fine feeding; 60KG is added to the No. 1 pellet, and when 30KG is added, the coarse feeding is changed into the fine feeding; the total amount of the 2# pellet is 60KG, and when 30KG is added, the coarse feeding is changed into the fine feeding.

When the weighing of silica and pellet ore is finished, feeding back a weighing end signal to an automatic batching control device, automatically giving a calculation result to a semi-coke set value by the automatic batching control device according to the actual weighing of silica multiplied by the ratio, starting 4 semi-coke feeders in sequence to start automatic weighing according to the set weighing, adding 80KG to 1# semi-coke in total, and changing coarse feeding into fine feeding when 50KG is added; adding 80KG in total to the semi-coke No. 2, and changing from coarse feeding to fine feeding when adding 50 KG; adding 80KG in total to the 3# semi coke, and changing from coarse feeding to fine feeding when adding 50 KG; adding 80KG in total to the No. 4 semi-coke, and changing from coarse feeding to fine feeding when adding 50 KG; after all feed bin title material signals all feed back and give automatic blending controlling means, automatic blending controlling means will weigh material end signal and pass to automatic feeding controlling means, the following belt of loading controlling means according to the start-up order, and 10 seconds of ringing bell before every belt starts, the start-up order is: the automatic batching and unloading device comprises a feeding trolley, a long inclined belt and a mixing belt, wherein after the mixing belt is started, a belt starting end signal is sent to the automatic batching and controlling device, after the automatic batching and controlling device receives the belt starting end signal, the automatic batching and controlling device judges the starting condition of an unloader, if the starting condition is met, after 2 seconds, a No. 1 silica unloader is automatically started to start unloading, after 4 seconds, a No. 2 silica unloader is automatically started to start unloading, after 4 seconds, a No. 3 silica unloader is automatically started to start unloading, after 4 seconds, a No. 4 silica unloader is automatically started to unload, after 4 seconds, a No. 1 blue charcoal unloader automatically starts unloading, after 4 seconds, a No. 2 blue charcoal unloader automatically starts unloading, after 4 seconds, a No. 3 blue charcoal unloader automatically starts unloading, after 4 seconds, a No. 4 blue charcoal unloader automatically starts unloading, and after 4 seconds, a No. 1 pellet unloader automatically starts unloading, after 4 seconds of delay, the 2# pellet unloader automatically starts to unload, and after all the bins finish unloading, the automatic batching control device controls the unloader to stop after 8 seconds of pulse driving when the actual material amount is less than 3Kg or when the actual material amount is less than 8 Kg.

Example 3

In the annular charging trolley system, the automatic charging control device controls the charging trolley to move to the center of the charging pipe, and the forward and reverse running of the charging trolley is automatically controlled by logical operation according to the running position of the charging trolley and the bin position, and the time delay of 10 seconds is added during the forward and reverse automatic switching. And simultaneously setting upper and lower limits of material level, carrying out logic comparison on the actual material level of the plurality of feeding pipes, feeding in a sequence from low to high, and controlling the stretching and collecting cylinder to automatically stretch and collect the baffle plate by the automatic feeding control device to feed. Taking 6 feeding pipes as an example for explaining logic control, when the operation positions of the feeding trolleys are respectively X1, X2, X3, X4, X5 and X6, the bin positions are respectively Y1, Y2, Y3, Y4, Y5 and Y6, when the operation position of the feeding trolley is X1 and the bin position of the selected pipe is Y1, if X1< Y1, the feeding trolley runs forwards, if X1> Y1 runs backwards, and when X1 is Y1, the feeding trolley stops running.

Example 4

The automatic electrode pressure and release control device controls the automatic pressure and release of the electrode, the pressure and release interval time is set according to the furnace condition, when the time countdown is 0, the automatic electrode pressure and release control device automatically controls the pressure and release of the electrode, the pressure and release oil cylinder performs 'loosening', 'rising' and 'pressure and release' according to the action sequence of 1, 3, 5, 7, 2, 4, 6 and 8, the time countdown is started when the pressure and release interval time is pressed for 80 minutes again after the pressure and release is finished, the pressure and release can not be pressed again within 80 minutes after the pressure and release interval time after the pressure and release of the electrode, even if the pressure and release button is pressed again, the automatic electrode pressure and release control device controls the pressure and release button to automatically bounce after 3 seconds, and pops out a 'do not press and release the electrode in advance' alarm character in a picture, thereby reminding an operator that the electrode cannot be pressed and released in advance to avoid production accidents such as electrode soft break and electrode. If the automatic electrode pressure-discharge control device is turned off and the electrode pressure-discharge device is in a non-automatic control state (namely, an unlocking state), the manual continuous pressure-discharge operation can be carried out.

Example 5

In the ferrosilicon furnace processing technology, as shown in the attached figure 6, raw materials are weighed firstly from a large door of a plant area and then are transported to a tipper (raw material components are tested and analyzed by sampling of a sampling machine), semi-coke raw materials are conveyed to a semi-coke stock yard through a tipper side-turning platform and are stacked, then the semi-coke raw materials are freely dropped onto a bin belt below the semi-coke stock yard through a feed opening below the semi-coke stock yard, the semi-coke raw materials are conveyed to a large-inclination angle belt through a south-line flat belt below the semi-coke stock yard and are conveyed to a four-floor batching station through the large-inclination angle belt, and then the semi-coke raw materials are uniformly added to a semi-coke storage. Silica and pellet ore are firstly weighed at a large door of a factory and directly transported to a silica stock yard by an automobile, and are also freely dropped to a north-line flat belt by a feed opening of the silica stock yard, and are transported to a circular vibrating screen in a screening device through a large-inclination belt, silica powder is filtered and then transported to a ball press through a first discharge belt, regular silica balls are prepared and then transported to a silica storage bin of a batching station through a belt, large-granularity silica in the silica raw material is transported to a second discharge belt through the circular vibrating screen and transported to a crusher, the normal-granularity silica raw material is transported to the large-inclination belt after crushing, and powder generated after the large-granularity silica raw material is crushed is transported to the ball press through a rotary belt again.

In the process, a distributor can be further arranged, the distributor is applied to the raw material supply requirement of supplying 2 small feeding belts by using 1 long inclined belt, firstly, a material distribution station supplies the material consumption requirement of 4 furnaces or 6 furnaces, and taking the material distribution requirement of supplying 4 furnaces by using one material distribution station as an example, 2 under-bin material mixing belts, 2 long inclined belts, 2 distributors, 4 small feeding belts and 4 lantern ring-shaped material feeding trolley devices are configured. Taking the requirement of supplying 6 furnaces for batching in a batching station as an example, 2 lower bin material mixing belts, 2 long inclined belts, 2 material distributors, 6 small feeding belts and 6 lantern ring-shaped feeding trolley devices are arranged.

Besides each furnace top bin is provided with a charging pipe (6 furnace top bins in the figure, so that the charging pipes comprise 6 charging pipes), the furnace top bin is also provided with a central charging pipe and an auxiliary charging pipe, and the central charging pipe is responsible for the main reaction blanking function of a three-phase electrode crucible area in the furnace. The auxiliary material pipe is used for adding materials and adjusting the proportion of furnace burden in the furnace in time, and the auxiliary material pipe is a mode of manually and directly feeding materials from a furnace door on a double-layer furnace surface.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.

Claims

1. The utility model provides a ferrosilicon stove automatic control device, includes that raw materials conveyor, dosing unit, loading attachment, electrode are pressed and are put device, electrode elevating gear, its characterized in that still includes:

the automatic batching control device is used for controlling the batching device to carry out automatic periodic batching, the automatic batching control device comprises an automatic feeding module and an automatic discharging module, the automatic feeding module controls a feeding machine and a weighing barrel in the batching device to automatically feed materials according to a preset raw material proportion in a periodic manner, and the automatic discharging module controls a discharging machine in the batching device to automatically discharge materials according to a period;

2. The automatic control device of claim 1, wherein in a batching cycle, after the weighing of all the storage bins is finished, the automatic batching control device transmits a material weighing finishing signal to the automatic feeding control device, and the automatic feeding control device controls the following belts to be started in sequence: the feeding small belt, the long inclined belt and the material mixing belt are all rung to remind before each belt is started.

3. The automatic control device of claim 1, wherein the feeding device comprises a long inclined belt and a small feeding belt, the storage bin of the annular feeding trolley system is located below the tail end of the small feeding belt, the rail is located above the furnace top of the ferrosilicon furnace, the feeding trolley runs forward and backward along the rail, a feeding pipe is arranged in each furnace top bin, each feeding pipe is provided with a stretching and retracting cylinder, 1 radar level gauge is arranged at the inlet of each feeding pipe and used for measuring the material level of each feeding pipe, each stretching and retracting cylinder is provided with 2 electromagnetic induction switches and used for feeding back the running position of the stretching and retracting cylinder, and the automatic feeding control device controls the stretching and retracting cylinders and used for controlling the opening and closing of the inlet baffles of the feeding pipes.

4. The automatic control device of claim 1, further comprising an automatic electrode elevation control device, wherein the automatic electrode elevation control device is connected with the electrode elevation device, the electrode elevation device comprises a transformer with a plurality of transformer gears, and the automatic electrode elevation control device controls the electrode to automatically elevate according to a comparison result of an actual current value and a set upper and lower current limit.

5. The automatic control device of claim 1, wherein the automatic batching control device is provided with two frequency converters, one of which is connected with all the feeders by using a combination of rough and fine given frequencies and controls the feeding frequencies of all the feeders, and the other of which is connected with all the unloaders by using a frequency converter of a given frequency and controls the unloading frequencies of all the unloaders.

6. The automatic control device of claim 1, wherein the automatic feeding control device is connected with the feeding trolley and controls the feeding trolley to run in a forward and reverse direction so as to feed the corresponding furnace top bin.

7. The automatic control device of claim 1, wherein the automatic electrode deflation control device further displays a deflation countdown time via a computer-operated interface.

8. The automatic control device of claim 1, wherein each bin of the batching device is provided with a feeder, a plurality of feeders for the same raw material share one weighing barrel, or one feeder is provided with one weighing barrel; the material weighing device is characterized in that the unloading machines are arranged below the material weighing barrels, one unloading machine is matched with one material weighing barrel, and a material mixing belt shared by a plurality of unloading machines is arranged below all the unloading machines.

9. The automatic control device of claim 1, further comprising a screening recovery device, wherein the screening recovery device is located in a raw material conveying device of the ferrosilicon furnace, and the screening recovery device is provided with a circular vibrating screen device and a first discharging belt.

10. The automatic control device of claim 9, wherein the circular vibrating screen device is arranged below the end of a large-inclination-angle belt in the raw material conveying device, and raw materials fall onto the circular vibrating screen device from the large-inclination-angle belt directly for screening;