CN210072396U - Material preparation speed monitoring system for vibrating screen under blast furnace trough - Google Patents

Abstract

The utility model relates to a vibrating screen speed monitored control system that prepares materials under blast furnace groove, including the shale shaker, still include weighing device, PLC control system and host computer operation picture warning suggestion and reset button, weighing device is located the shale shaker under, PLC control system is including assigning the functional block, the function block of delaying time, operation functional block and comparison functional block, weighing device, assign the functional block, the function block of operation, comparison functional block and host computer operation picture warning suggestion and reset button signal connection in proper order, vibrating motor running signal and the assignment functional block enable end in the shale shaker of delay functional block enable end signal connection; the utility model discloses a shale shaker speed monitored control system that prepares material under blast furnace groove has not only alleviateed staff's intensity of labour, can guarantee moreover that the blast furnace normally prepares material, has effectively avoided because the blast furnace that the not enough leads to of prepareeing material subtracts production or even shut down, and the guarantee blast furnace is steadily productive high.

Description

Material preparation speed monitoring system for vibrating screen under blast furnace trough

Technical Field

The utility model belongs to the technical field of the metallurgical equipment technique and specifically relates to a shale shaker speed monitored control system that prepares material under blast furnace groove.

Background

The blast furnace ironmaking raw materials are various in types and large in demand, and the feeding under the blast furnace groove is an important part in the blast furnace smelting process and comprises a storage bin, a feeding machine, a vibrating screen, a weighing hopper and a skip car system. The sintered ore must be screened through a vibrating screen under the trough before entering the furnace. Therefore, the under-groove vibrating screen screening equipment is important equipment for feeding raw materials into the blast furnace. The mode that adopts the shale shaker to sieve the material under present blast furnace groove, after the shale shaker operation, under the situation of prepareeing material, the operative employee needs the operation condition of every equipment of on-the-spot inspection, whether the inspection cardan shaft breaks, whether the batcher blocks the material, so not only increase intensity of labour, and when many shale shakers of under the groove operation, the big dust of noise is many, has serious harm to staff's health, in case the shale shaker breaks down, the prepareement material is not enough, will directly influence blast furnace production stockline, long-time low stockline, can lead to blast furnace to subtract wind or the occurence of failure of blowing down.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the problems of high noise, high on-site dust content, high working strength of operators, high raw material demand, more equipment and high linkage strength of a material preparation system under a blast furnace trough used in the prior art, the material preparation speed monitoring system of the vibrating screen under the blast furnace trough is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a shale shaker speed monitored control system that prepares materials under blast furnace groove, includes the shale shaker, still includes weighing device, PLC control system and host computer operation picture warning suggestion and reset button, the weighing device is located the shale shaker under, PLC control system is including assigning the function block, delay function block, operation function block and comparison function block, weighing device, assignment function block, operation function block, comparison function block and host computer operation picture warning suggestion and reset button signal connection in proper order, vibrating motor running signal and the assignment function block enable end in the shale shaker of delay function block enable end signal connection.

The utility model discloses a shale shaker speed monitored control system of prepareeing material under blast furnace groove, before the shale shaker begins to sieve the material, with theoretical value of prepareeing material input comparison function block in, the excess stock weight value is recorded to the weighing device to give value and store to the assignment function block in transmitting the excess stock weight value to the PLC system; when a delay function block in a PLC system detects that a vibrating motor in a field vibrating screen runs for one minute, signals are transmitted to an assignment function block, the assignment function block reads the numerical value of a weighing device at the moment and is a one-minute stock value, the assignment function block transmits a surplus material weight value and a one-minute stock value to an operation function block, the operation function block subtracts the surplus material weight value from the one-minute stock value to obtain an actual stock value, the operation function block transmits the actual stock value to a comparison function block, the comparison function block compares the actual stock value with a theoretical stock value input in advance, if the actual stock value is smaller than the theoretical stock value, the vibrating screen runs in a fault, the comparison function block transmits signals to an upper computer operation picture alarm prompt and reset button, the upper computer operation picture alarm prompt and reset button gives an alarm, and an operator receives the alarm signals, the running state of the on-site inspection equipment needs to be immediately checked, and after the on-site material preparation equipment is inspected, the alarm prompt can be relieved by clicking an alarm prompt and a reset button of an operation picture of the upper computer; and if the actual material preparation value is larger than or equal to the theoretical material preparation value, the vibrating screen operates normally, and the comparison functional block does not transmit signals. The utility model discloses a shale shaker speed monitored control system that prepares material under blast furnace groove has not only alleviateed staff's intensity of labour, can guarantee moreover that the blast furnace normally prepares material, has effectively avoided because the blast furnace that the not enough leads to of prepareeing material subtracts production or even shut down, and the guarantee blast furnace is steadily productive high.

In order to simplify data, the PLC control system further comprises a real type conversion and integer function block, the real type conversion and integer function block is located between the operation function block and the comparison function block, and the real type conversion and integer function block is in signal connection with the operation function block and the comparison function block.

Further, the weighing device comprises a weighing sensor and a weighing controller, the weighing sensor is in signal connection with the weighing controller, and the weighing controller is in signal connection with the input end of the assignment function block.

Preferably, the arithmetic function block is a subtraction function block.

The utility model has the advantages that the utility model discloses a vibrating screen feed rate monitoring system under the blast furnace groove inputs the theoretical feed value into the comparison function block before the vibrating screen begins to screen materials, the weighing device records the excess material weight value and transmits the excess material weight value to the assignment function block in the PLC system for assignment and storage; when a delay function block in a PLC system detects that a vibrating motor in a field vibrating screen runs for one minute, signals are transmitted to an assignment function block, the assignment function block reads the numerical value of a weighing device at the moment and is a one-minute stock value, the assignment function block transmits a surplus material weight value and a one-minute stock value to an operation function block, the operation function block subtracts the surplus material weight value from the one-minute stock value to obtain an actual stock value, the operation function block transmits the actual stock value to a comparison function block, the comparison function block compares the actual stock value with a theoretical stock value input in advance, if the actual stock value is smaller than the theoretical stock value, the vibrating screen runs in a fault, the comparison function block transmits signals to an upper computer operation picture alarm prompt and reset button, the upper computer operation picture alarm prompt and reset button gives an alarm, and an operator receives the alarm signals, the running state of the on-site inspection equipment needs to be immediately checked, and after the on-site material preparation equipment is inspected, the alarm prompt can be relieved by clicking an alarm prompt and a reset button of an operation picture of the upper computer; and if the actual material preparation value is larger than or equal to the theoretical material preparation value, the vibrating screen operates normally, and the comparison functional block does not transmit signals. The utility model discloses a shale shaker speed monitored control system that prepares material under blast furnace groove has not only alleviateed staff's intensity of labour, can guarantee moreover that the blast furnace normally prepares material, has effectively avoided because the blast furnace that the not enough leads to of prepareeing material subtracts production or even shut down, and the guarantee blast furnace is steadily productive high.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is an overall block diagram of the material preparation speed monitoring system of the vibrating screen of the present invention;

FIG. 2 is a flow chart of the material preparation speed monitoring system of the vibrating screen of the present invention;

fig. 3 is a schematic view of a stock preparation apparatus.

In the figure: 1. feeding material flow of a feeding machine, 2 material flow control baffle plates, 3 vibrating screens, 4 weighing hoppers and 5 discharging valves.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The material preparation speed monitoring system of the vibrating screen under the blast furnace trough shown in the figure 1 comprises the vibrating screen, a weighing device, a PLC (programmable logic controller) control system and an upper computer operation picture alarm prompt and reset button, wherein the weighing device is positioned right below the vibrating screen, and the PLC control system comprises a CPU (central processing unit) module, an analog quantity input module, a power supply module, a digital quantity input module and a control program; the control program comprises an assignment function block, a delay function block, an operation function block, a real type conversion into integer function block and a comparison function block, wherein the operation function block is a subtraction function block. The weighing device, the CPU module, the analog quantity input module, the digital quantity input module and the upper computer operation picture alarm prompt and reset button are in signal connection; the weighing device comprises a weighing sensor and a weighing controller, wherein the weighing sensor is in signal connection with the weighing controller, and the weighing controller is in signal connection with the input end of the assignment function block; and the power supply module is used for providing a working power supply for the PLC control system.

The utility model discloses a shale shaker speed monitored control system of prepareeing material under blast furnace groove, before the shale shaker begins to sieve the material, as shown in FIG. 2, confirm theoretical value of prepareeing material earlier, the definite method of theoretical value of prepareeing material is: determining a one-minute material sieving amount, namely a theoretical material preparation value, according to the specifications of the material flow 1, the material flow control baffle 2 and the vibrating screen 3 of the on-site sinter feeder, and then inputting the theoretical material preparation value into a comparison functional block; the weighing device records the excess material weight value, and the determination method of the excess material weight value comprises the following steps: a blast furnace groove lower feeder is started to form a feeder lower material flow 1, as shown in fig. 3, raw materials pass through the feeder to a vibrating screen 3, a material flow control baffle 2 is used for controlling the material flow to the vibrating screen 3, the raw materials can enter a weighing hopper 4 after being screened by the vibrating screen 3, the weighing hopper 4 is used for measuring the weight of the raw materials entering a blast furnace, a material discharge valve 5 needs to be opened for discharging before the vibrating screen 3 is started each time, after the valve is closed, the measuring value of the weighing hopper 4 is the residual material weight value of the previous batch of screen materials, and after the residual material weight value is determined, the residual material weight value is transmitted to an assignment function block in a PLC system for assignment and storage; the delay function block in the PLC system transmits signals to the assignment function block after detecting that a vibrating motor in the site vibrating screen runs for one minute, the assignment function block reads the numerical value of the weighing device at the moment as a one-minute stock value, the assignment function block transmits a surplus material weight value and a one-minute stock value to the operation function block, the operation function block subtracts the surplus material weight value by using the one-minute stock value to obtain an actual stock value, the operation function block transmits the actual stock value to the real type conversion function block, the real type conversion function block converts data into integers and then transmits the data to the comparison function block, the comparison function block compares the actual stock value with a theoretical stock value input in advance, if the actual stock value is smaller than the theoretical stock value, the vibrating screen runs in a fault, and the comparison function block transmits alarm signals to an upper computer operation picture alarm prompt and reset button, the upper computer operates the picture alarm prompt and the reset button to give an alarm, an operator needs to immediately check the running state of the equipment on site after receiving an alarm signal, and after the on-site material preparation equipment is checked, the alarm prompt can be relieved by clicking the upper computer to operate the picture alarm prompt and the reset button; and if the actual material preparation value is larger than or equal to the theoretical material preparation value, the vibrating screen operates normally, and the comparison functional block does not transmit signals. The utility model discloses a shale shaker speed monitored control system that prepares material under blast furnace groove has not only alleviateed staff's intensity of labour, can guarantee moreover that the blast furnace normally prepares material, has effectively avoided because the blast furnace that the not enough leads to of prepareeing material subtracts production or even shut down, and the guarantee blast furnace is steadily productive high.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (4)

1. The utility model provides a shale shaker speed monitored control system of prepareeing material under blast furnace groove, includes the shale shaker, its characterized in that: still include weighing device, PLC control system and host computer operation picture warning suggestion and reset button, weighing device is located the shale shaker under, PLC control system is including assignment function block, delay function block, operation function block and comparison function block, weighing device, assignment function block, operation function block, comparison function block and host computer operation picture warning suggestion and reset button signal connection in proper order, vibrating motor running signal and the assignment function block enable end in the delay function block enable end signal connection shale shaker.

2. The system of claim 1 for monitoring the feed rate of a vibrating screen below a blast furnace trough, comprising: the PLC control system further comprises a real type conversion and integer function block, the real type conversion and integer function block is located between the operation function block and the comparison function block, and the real type conversion and integer function block is in signal connection with the operation function block and the comparison function block.

3. The system of claim 1 for monitoring the feed rate of a vibrating screen below a blast furnace trough, comprising: the weighing device comprises a weighing sensor and a weighing controller, the weighing sensor is in signal connection with the weighing controller, and the weighing controller is in signal connection with the assignment function block.

4. The system of claim 1 for monitoring the feed rate of a vibrating screen below a blast furnace trough, comprising: the arithmetic function block is a subtraction function block.

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