Safe blanking system and method for particle steel

Abstract

The invention provides a particle steel safe blanking system and method, and belongs to the technical field of steelmaking safety protection, the particle steel safe blanking system comprises a pellet blanking module, a particle steel blanking module, a belt conveying mechanism, a detection module and a control module; the pellet discharging module comprises a pellet bin and a pellet bin gate, and the pellet bin corresponds to the belt through the pellet bin gate. The particle steel discharging module comprises a particle steel bin and a particle steel bin gate, the particle steel bin gate is arranged above the belt, and after the particle steel bin gate is opened, particle steel falls to the belt under the action of gravity; the detection module is used for detecting the material head position and the material tail position of the pellets on the belt; the control module is electrically connected with the pellet bin gate, the particle steel bin gate, the belt conveying mechanism and the detection module, and the control module controls the opening and closing state of the particle steel bin gate and the work of the belt conveying mechanism according to the material head position and the material tail position, detected by the detection module, of the pellets, so that particle steel is flatly laid on the pellets, and the belt is prevented from being scratched.

Description

Technical Field

[0001] This invention belongs to the field of steelmaking safety protection technology. Specifically, this invention relates to a particle steel safe feeding system and method. Background Technology

[0002] With the continued slump in the steel market, low-cost smelting has become the mainstream for steel companies. Particle steel, a mixture of steel and slag, is favored by steel companies due to its low price. However, particle steel comes in various shapes, and some lumps are quite sharp, easily scratching the conveyor belt and posing a safety hazard.

[0003] Chinese Patent 219670597U provides a hot-melt briquetting system for ferrous iron and granulated steel, comprising a raw material silo; the discharge port of the raw material silo is located above the feeding end of a first belt conveyor, and the discharge end of the first belt conveyor is located above a flap plate; the discharge end of a second belt conveyor is connected to the inlet of a rotary kiln, the outlet of the rotary kiln is connected to the inlet of a press distribution device, and the outlet of the press distribution device is connected to a chute, the outlet of the chute being located above the mold of the hot press. Advantages: The material is fed into the ferrous iron or granulated steel silo by the first belt conveyor, mixed and fed into the rotary kiln by the second belt conveyor, and after being hot-melted in the rotary kiln, it is hot-pressed into shape by the hot press.

[0004] Existing technologies have not solved the problem of belt scratches caused during particle steel feeding. Summary of the Invention

[0005] The present invention aims to provide a safe feeding system and method for particle steel, so as to solve the problem of belt scratches caused during particle steel feeding.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides a safe feeding system for pellet steel, comprising a pellet ore feeding module, a pellet steel feeding module, a belt conveyor mechanism, a detection module, and a control module. The pellet ore feeding module includes a pellet bin and a pellet bin gate, the pellet bin being correspondingly positioned to the belt conveyor via the pellet bin gate. The pellet steel feeding module includes a pellet steel bin and a pellet steel bin gate, the pellet steel bin gate being positioned above the belt conveyor. When the pellet steel bin gate is opened, the pellet steel falls onto the belt conveyor due to gravity. The detection module is used to detect the head and tail positions of the pellets on the belt conveyor. The control module is electrically connected to the pellet bin gate, the pellet steel bin gate, the belt conveyor mechanism, and the detection module. Based on the head and tail positions of the pellets detected by the detection module, the control module controls the opening and closing states of the pellet steel bin gate and the operation of the belt conveyor mechanism, ensuring that the pellet steel is laid flat on the pellets.

[0008] The detection module includes a head detection component and a tail detection component; the head detection component and the tail detection component are arranged at intervals along the conveying direction of the belt.

[0009] Both the head and tail detection components employ photoelectric sensors. Each photoelectric sensor includes a transmitter and a receiver, which are respectively disposed on both sides of the belt, with the transmitting end of the transmitter and the receiving end of the receiver facing each other. The photoelectric sensor is electrically connected to the control module.

[0010] The belt conveyor mechanism is a variable frequency conveyor, and the feed end of the variable frequency conveyor is connected to the particle steel bin gate; the variable frequency conveyor is electrically connected to the control module.

[0011] The control module uses a PLC controller.

[0012] This invention provides a method for safe feeding of particle steel, comprising the following steps:

[0013] Step 1: The control module controls the opening of the pellet bin gate, allowing the pellets to be fed onto the conveyor belt;

[0014] Step 2: The control module detects the position of the pellet head on the conveyor belt through the detection module;

[0015] Step 3: When the detection module detects that the material head has reached the preset position, the control module controls the particle steel feeding module to start, feeding the material onto the conveyor belt, and the particle steel is spread flat on the pellet ore;

[0016] Step 4: The control module detects the tail position of the pellets on the conveyor belt through the detection module;

[0017] Step 5: When the detection module detects that the material tail has passed the preset position, the control module controls the particle steel feeding module to stop feeding.

[0018] In step two, the specific method for detecting the material head is as follows: the photoelectric sensor emits detection light to the surface of the belt in real time. When the material head of the pellet reaches the detection area of ​​the photoelectric sensor, the pellet blocks the detection light, and the receiver of the photoelectric sensor cannot receive the light signal, so it sends a material head detection signal to the control module.

[0019] In step four, the specific method for detecting the tailings is as follows: when the tailings of the pellets pass through the detection area of ​​the photoelectric sensor, the detection light emitted by the generator is no longer blocked, the receiver of the photoelectric sensor receives the light signal again, and sends the tailings detection signal to the control module.

[0020] The preset position reached by the material head in step three is the position where the particle steel is fed onto the conveyor belt. The preset position reached by the material tail in step five is the downstream position of the conveyor belt in the direction of travel, based on the preset position reached by the material head in step three.

[0021] The technical effects of this invention are as follows:

[0022] (1) This invention eliminates safety hazards. By precisely controlling the timing of the addition of the granulated steel, the granulated steel is evenly spread on the surface of the pellet ore, avoiding direct contact between the granulated steel and the feeding belt. This effectively prevents the granulated steel from scratching the feeding belt, eliminates safety hazards in the blast furnace feeding process, and ensures production safety.

[0023] (2) The present invention improves the control accuracy by using photoelectric sensors to detect the head and tail positions of the pellets, which has high detection accuracy and fast response speed, ensuring that the particle steel can accurately cover the pellets.

[0024] (3) The present invention has a high degree of automation. The entire feeding process is automatically controlled by the control module without human intervention, which reduces the intensity of manual labor, improves production efficiency, and avoids errors caused by manual operation. Attached Figure Description

[0025] This manual includes the following figures, which illustrate the following:

[0026] Figure 1 This is a flowchart of a particle steel safe feeding system and method according to the present invention. Detailed Implementation

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0028] This invention provides a safe feeding system for pellet steel, including a pellet ore feeding module, a pellet steel feeding module, a belt conveyor mechanism, a detection module, and a control module. The pellet ore feeding module includes a pellet bin and a pellet bin gate, with the pellet bin corresponding to the belt conveyor via the pellet bin gate. The pellet steel feeding module includes a pellet steel bin and a pellet steel bin gate, with the pellet steel bin gate positioned above the belt conveyor. When the pellet steel bin gate opens, the pellet steel falls onto the belt conveyor due to gravity. The detection module detects the head and tail positions of the pellets on the belt conveyor. The control module is electrically connected to the pellet bin gate, the pellet steel bin gate, the belt conveyor mechanism, and the detection module. Based on the head and tail positions of the pellets detected by the detection module, the control module controls the opening and closing states of the pellet steel bin gate and the operation of the belt conveyor mechanism, ensuring that the pellet steel is laid flat on the pellets.

[0029] The detection module includes a head detection component and a tail detection component; the head detection component and the tail detection component are spaced apart along the conveying direction of the belt.

[0030] Both the head and tail detection components use photoelectric sensors. The photoelectric sensor includes a transmitter and a receiver, which are respectively set on both sides of the belt. The transmitting end of the transmitter and the receiving end of the receiver are set opposite to each other. The photoelectric sensor is electrically connected to the control module.

[0031] The belt conveyor mechanism uses a variable frequency conveyor, and the feed end of the variable frequency conveyor is connected to the particle steel bin gate; the variable frequency conveyor is electrically connected to the control module.

[0032] The control module uses a PLC controller.

[0033] This invention provides a method for safe feeding of particle steel, comprising the following steps:

[0034] Step 1: The control module controls the opening of the pellet bin gate, allowing the pellets to be fed onto the conveyor belt;

[0035] Step 2: The control module detects the position of the pellet head on the conveyor belt through the detection module;

[0036] Step 3: When the detection module detects that the material head has reached the preset position, the control module controls the particle steel feeding module to start, feeding the material onto the conveyor belt, and the particle steel is spread flat on the pellet ore;

[0037] Step 4: The control module detects the tail position of the pellets on the conveyor belt through the detection module;

[0038] Step 5: When the detection module detects that the material tail has passed the preset position, the control module controls the particle steel feeding module to stop feeding.

[0039] In step two, the specific method for detecting the material head is as follows: the photoelectric sensor emits detection light to the surface of the belt in real time. When the material head of the pellet reaches the detection area of ​​the photoelectric sensor, the pellet blocks the detection light, and the receiver of the photoelectric sensor cannot receive the light signal, so it sends a material head detection signal to the control module.

[0040] In step four, the specific method for detecting the tailings is as follows: when the tailings of the pellets pass through the detection area of ​​the photoelectric sensor, the detection light emitted by the generator is no longer blocked, the receiver of the photoelectric sensor receives the light signal again, and sends the tailings detection signal to the control module.

[0041] The preset position reached by the material head in step three is the position where the particle steel is fed onto the conveyor belt. The preset position reached by the material tail in step five is the downstream position of the conveyor belt in the direction of travel, based on the preset position reached by the material head in step three.

[0042] The present invention will now be described in detail.

[0043] This invention discloses a pellet steel safety feeding system, including a pellet ore feeding module, a pellet steel feeding module, a belt conveyor mechanism, a detection module, and a control module. The purpose of this invention is to accurately control the timing of pellet steel feeding by detecting the head and tail positions of the pellets on the belt, thereby avoiding direct contact between the pellet steel and the belt and eliminating the safety hazard of the pellet steel scratching the belt.

[0044] The pellet feeding module includes a pellet bin, a pellet bin gate, and a conveyor belt. The pellet bin stores pellets and has a discharge port at its bottom. The pellet bin gate is installed at the discharge port to control the discharge of pellets. The control module outputs control signals to control the pellet bin gate, achieving automated control of pellet feeding.

[0045] The particle steel feeding module is used to feed particle steel onto the conveyor belt, and the timing of the feeding is controlled by the control module. The particle steel feeding module includes a particle steel bin and a particle steel bin gate. The particle steel bin is used to store particle steel, and it has a discharge port at the bottom. The particle steel bin gate is installed at the discharge port and is controlled by the control module.

[0046] The belt conveyor system uses a variable frequency drive (VFD) conveyor to drive the belt, transporting the pellets to the granulated steel feeding position, and then moving both the pellets and granulated steel to the designated location. The VFD conveyor is controlled by a control module, which adjusts the belt speed by regulating the conveyor's operating power. This, in turn, adjusts the amount of granulated steel per unit area on the pellets, preventing excessive granulated steel feeding from affecting the protective function of the pellets on the belt.

[0047] The detection module is used to collect the head and tail positions of ore pellets on the conveyor belt in real time and transmit the collected information to the control module, providing data support for the control module to control the feeding and stopping of pellets. The detection module includes a head detection component and a tail detection component, both of which use photoelectric sensors to accurately detect the head and tail positions of the ore pellets using light. The head and tail detection components are spaced apart on the conveyor belt. Each photoelectric sensor includes a transmitter and a receiver, which are installed on opposite sides of the conveyor belt, with the transmitting end of the transmitter facing the receiving end of the receiver to ensure that the detection light emitted by the transmitter can be detected by the receiver in the absence of obstructions. The signal output terminals of both the head and tail detection components are connected to the control module via signal lines to convert the detected light signals into electrical signals and transmit them to the control module.

[0048] The control module 12 employs a PLC controller, specifically a Siemens S7-200 SMART in this embodiment, which boasts advantages such as high processing speed, high reliability, and strong anti-interference capabilities, meeting the control requirements of industrial sites. The signal input terminals of the control module are connected to the head and tail detection components via signal lines to receive the head and tail positions of the pellet ore detected by the detection module. The signal output terminals of the control module are connected to the pellet silo gate, the particle steel silo gate, and the frequency converter conveyor via signal lines to output control signals to control their operation.

[0049] The specific steps of the particle steel safe feeding method based on the above system of the present invention are as follows.

[0050] The control module issues a pellet feeding command and outputs a control signal to the pellet bin gate to open it. Under the action of gravity, the pellets in the pellet bin fall onto the conveyor belt through the discharge port. At the same time, the control module controls the variable frequency conveyor to start, and the conveyor belt starts running, driving the pellets to the designated location.

[0051] During the pellet feeding process, the pellet head detection component operates in real time, emitting detection light onto the surface of the conveyor belt. When the pellet head reaches the detection area of ​​the component, it blocks the detection light, preventing the receiver from receiving the light signal and thus sending a pellet head detection signal to the control module. When the pellet reaches a preset position—that is, when the pellets laid flat on the conveyor belt reach the position corresponding to the particle steel bin gate—the control module controls the particle steel bin gate to open, allowing the particle steel to fall onto the pellets.

[0052] When the control module closes the pellet bin gate, the detection light emitted by the tail detection component is no longer blocked. The receiver in the photoelectric sensor of the tail detection component receives the light signal again and sends a tail detection signal to the control module. When the tail of the pellet is detected to have reached the preset position, that is, when the tail of the pellet reaches the downstream position of the feed head preset position during the belt operation, the control module controls the pellet steel bin gate to close. It should be noted that the preset position of the tail is set downstream of the feed head preset position in the belt movement direction because the pellets do not immediately reach the pellets on the belt when they are fed. To prevent the pellets from falling directly onto the belt instead of the pellets after descent, the preset position of the tail is set as described above. The preset position of the tail can be adjusted according to the belt speed. The higher the belt speed, the greater the distance between the preset position of the tail and the preset position of the feed head. In the embodiment of the present invention, the distance between the preset position of the tail and the preset position of the feed head is one meter.

[0053] After the system is shut down, staff will inspect each component, including whether the belt surface is scratched, whether each sensor is working properly, and whether each gate is properly sealed. If any problems are found, they will be dealt with in a timely manner to ensure that the system can operate normally next time.

[0054] The beneficial effects of the present invention are described in detail below.

[0055] This invention eliminates safety hazards by precisely controlling the timing of the particle steel delivery, ensuring that the particle steel is evenly spread on the surface of the pellet ore, avoiding direct contact between the particle steel and the charging belt, effectively preventing the particle steel from scratching the charging belt, eliminating safety hazards during the blast furnace charging process, and ensuring production safety.

[0056] This invention improves control precision by using photoelectric sensors to detect the head and tail positions of the pellets, resulting in high detection accuracy and fast response speed; ensuring that the granulated steel can accurately cover the pellets.

[0057] The present invention has a high degree of automation. The entire feeding process is automatically controlled by the control module without human intervention, which reduces the intensity of manual labor, improves production efficiency, and avoids errors caused by manual operation.

[0058] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A particle steel safe blanking system characterized by: The application relates to a balling pellet underfeeding module, a particle steel underfeeding module, a belt conveying mechanism, a detection module and a control module; the balling pellet underfeeding module comprises a balling pellet bin and a balling pellet bin gate, the balling pellet bin is correspondingly arranged with the belt through the balling pellet bin gate; the particle steel underfeeding module comprises a particle steel bin and a particle steel bin gate, the particle steel bin gate is arranged above the belt, and the particle steel falls to the belt under the action of gravity after the particle steel bin gate is opened; the detection module is used for detecting the head position and tail position of the balling pellet on the belt; the control module is electrically connected with the balling pellet bin gate, the particle steel bin gate, the belt conveying mechanism and the detection module, the control module controls the opening and closing state of the particle steel bin gate and the working of the belt conveying mechanism according to the head position and tail position of the balling pellet detected by the detection module, and the particle steel is laid on the balling pellet.

2. A particle steel safe blanking system as claimed in claim 1, wherein: The detection module comprises a head detection assembly and a tail detection assembly; the head detection assembly and the tail detection assembly are arranged at intervals along the conveying direction of the belt.

3. A system for safe blanking of a particle steel according to claim 2, characterized in that: The head detection assembly and the tail detection assembly both adopt photoelectric sensors, the photoelectric sensor comprises an emitter and a receiver, the emitter and the receiver are arranged on the two sides of the belt respectively, the emitting end of the emitter is arranged opposite to the receiving end of the receiver; the photoelectric sensor is electrically connected with the control module.

4. A system for safely dispensing a particle steel according to claim 1, wherein: The belt conveying mechanism adopts a variable frequency conveyor, the feeding end of the variable frequency conveyor is connected with the particle steel bin gate; the variable frequency conveyor is electrically connected with the control module.

5. A system for safely dispensing a particle steel according to claim 1, wherein: The control module adopts a PLC controller. ​ 6. A method of safe blanking of a particle steel according to any one of claims 1 to 5, characterized in that The application further discloses a balling pellet and particle steel laying method. Step one: the control module controls the balling pellet bin gate to be opened, so that the balling pellet is underfed to the belt; Step two: the control module detects the head position of the balling pellet on the belt through the detection module; Step three: when the detection module detects that the head reaches a preset position, the control module controls the particle steel underfeeding module to be started and to be underfed to the belt, so that the particle steel is laid on the balling pellet; Step four: the control module detects the tail position of the balling pellet on the belt through the detection module; Step five: when the detection module detects that the tail passes through the preset position, the control module controls the particle steel underfeeding module to stop underfeeding.

7. A method of safe blanking of a particle steel as claimed in claim 6, characterized in that: In step two, the specific method of the head detection is that the photoelectric sensor emits detection light to the surface of the belt in real time, when the head of the balling pellet reaches the detection area of the photoelectric sensor, the balling pellet blocks the detection light, the receiver of the photoelectric sensor cannot receive the light signal, and the head detection signal is sent to the control module.

8. A method of safe blanking of a particle steel as claimed in claim 6, characterized in that: In step four, the specific method of the tail detection is that when the tail of the balling pellet passes through the detection area of the photoelectric sensor, the detection light emitted by the generator is no longer blocked, the receiver of the photoelectric sensor receives the light signal again, and the tail detection signal is sent to the control module.

9. A method of safely unloading a particle steel as defined in claim 6, wherein: The preset position where the head reaches in step three is the position where the particle steel is underfed to the belt, and the preset position where the tail reaches in step five is a position downstream of the preset position where the head reaches in step three in the running direction of the belt.

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