An automatic ash unloading control system for an annular cooling ash unloading vehicle
By installing a proximity switch and PLC controller on the ring-cooled ash unloading truck, combining the drive motor and the ash unloading valve, automatic ash unloading control is achieved, which solves the problem of untimely ash unloading caused by manual operations and improves production stability and safety , and prevent unexpected situations through real-time monitoring and alarm systems.
Patent Information
- Application Number
- CN201811478084.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-12-05
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2038-12-05
AI Technical Summary
The unloading process of existing ring-cooled ash unloading trucks relies on manual control, resulting in untimely unloading, poor production quality and stability, high labor intensity for workers, and easy production accidents.
Design an automatic ash unloading control system for ring-cooled ash unloading trolleys. By installing proximity switches and PLC controllers on the trolley tracks, combining drive motors and ash unloading valves, automatic control and fault monitoring are achieved to ensure that the trolley reaches the ash unloading point in time and Remove dust in time, and is equipped with human infrared induction switch and acoustic and light alarm for real-time monitoring and alarm.
The automatic and timely unloading of the ring-cooled ash truck is realized, which improves the stability of the production process and the quality of the furnace, reduces the labor intensity of workers, and improves the operating stability and safety of the system through real-time monitoring and alarm systems.
Smart Images
Figure CN109455486B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ring cooling ash unloading in iron and steel metallurgical furnace charge plants such as sintering plants and pelletizing plants, and in particular to an automatic ash unloading control system for a ring cooling ash unloading trolley. Background Art
[0002] The ring cooling ash unloading system of iron and steel metallurgical furnace charge plants such as sintering plants and pelletizing plants is a key process control in the ring cooling process of furnace charge such as sintering and pelletizing. Its main working principle is: the bulk material and dust blown out by the blower in the ring cooling process are unloaded to the ring cooling ash unloading trolley through the double-layer ash unloading valve, and then the ring cooling ash unloading trolley is transported along the trolley track to the ash unloading point for unloading. At present, the ash unloading process of the ring cooling ash unloading trolley is: manually control the action of the driving motor of the ring cooling ash unloading trolley, so that the driving motor drives the ring cooling ash unloading trolley to move along the trolley track, and then the worker judges by experience that the ring cooling ash unloading trolley arrives at the ash unloading point, and then manually controls the ring cooling ash unloading trolley to stop, and manually opens the ring cooling ash unloading valve at the discharge port of the ring cooling ash unloading trolley to unload the ash. The above manual ash unloading operation mode has the following disadvantages: the ring cooling ash unloading trolley cannot unload the ash in time, and it is very easy to cause production quality accidents due to untimely unloading. The stability of the production process and the stability of the furnace charge quality are poor, and the labor intensity of the workers is high. Summary of the invention
[0003] The purpose of the present invention is to provide an automatic ash unloading control system for an annular cooling ash unloading trolley which can enable the annular cooling ash unloading trolley to automatically and timely unload ash.
[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: the automatic ash unloading control system of the ring-cooling ash unloading trolley is described, and a proximity switch is installed at each ash unloading point of the trolley track, and a proximity switch board matched with the proximity switch is installed on the ring-cooling ash unloading trolley, all proximity switches are connected to the PLC controller signal at the same time, and the PLC controller is also connected to the drive motor of the ring-cooling ash unloading trolley, the ring-cooling ash unloading valve of the ring-cooling ash unloading trolley, and the host computer signal, and the host computer is connected to the alarm signal; the PLC controller can control the drive motor and the ring-cooling ash unloading valve to operate according to the trolley arrival signal sent when the proximity switch is touched by the proximity switch board, so that the ring-cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the moving time of the ring-cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range, and if it exceeds the preset safety time range, a ring-cooling trolley fault signal is sent to the host computer; the host computer can receive the ring-cooling trolley fault signal sent by the PLC controller and control the alarm to sound an alarm.
[0005] Furthermore, the aforementioned automatic ash unloading control system of an annular cooling ash unloading trolley, wherein: a PLC controller includes: a PLC slave station connected to the drive motor of the annular cooling ash unloading trolley, the annular cooling ash unloading valve of the annular cooling ash unloading trolley, and all proximity switch signals, and a PLC master station connected to the PLC slave station and the host computer signal at the same time, the PLC slave station is used to send the trolley arrival signal sent by the proximity switch to the PLC master station, and at the same time send the drive motor and the annular cooling ash unloading valve control signal sent by the PLC master station to the drive motor and the annular cooling ash unloading valve; the PLC master station is used to receive the trolley arrival signal sent by the PLC slave station, and send a control signal to the drive motor and the annular cooling ash unloading valve through the PLC slave station, thereby controlling the action of the drive motor and the annular cooling ash unloading valve, so that the annular cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the movement time of the annular cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range, and if it exceeds the preset safety time range, a annular cooling trolley fault signal is sent to the host computer.
[0006] Furthermore, the aforementioned automatic ash unloading control system for the ring-cooled ash unloading trolley, wherein: it also includes a human infrared sensing switch installed at the front end of the ring-cooled ash unloading trolley for determining whether there is a person in front of the ring-cooled ash unloading trolley, and the human infrared sensing switch is connected to the PLC master station signal through the PLC slave station. When the PLC master station receives the sensing signal, it will control the drive motor to stop the action through the PLC slave station, so that the ring-cooled ash unloading trolley stops.
[0007] Furthermore, the aforementioned automatic ash unloading control system for the ring-cooled ash unloading trolley, wherein: it also includes a motor brake device that can brake and stop the driving motor of the ring-cooled ash unloading trolley, and the motor brake device is connected to the PLC master station signal through the PLC slave station.
[0008] Furthermore, in the aforementioned automatic ash unloading control system for the ring-cooled ash unloading trolley, the alarm is an audible and visual alarm.
[0009] Through the implementation of the above technical scheme, the beneficial effects of the present invention are: (1) it can automatically control the ring cooling ash unloading trolley to unload ash in time, avoiding the occurrence of production quality accidents caused by untimely unloading, improving the stability of the production process and the stability of the furnace charge quality, and at the same time greatly reducing the labor intensity of the operators; (2) it can monitor the operation status of the ring cooling ash unloading trolley in real time. When an accident occurs to the ring cooling ash unloading trolley, a striking alarm prompt or sound alarm can be popped up on the upper computer screen, so that the operator can find the abnormality of the trolley in time, thereby improving the operation stability and use safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The present invention provides a schematic structural diagram of an automatic ash unloading control system for an annular cooling ash unloading trolley. DETAILED DESCRIPTION
[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0012] like Figure 1 As shown, a kind of automatic ash unloading control system of the ring-cooling ash unloading trolley is respectively installed with a proximity switch 1 at each ash unloading point of the trolley track, and a proximity switch board matched with the proximity switch 1 is installed on the ring-cooling ash unloading trolley, all proximity switches 1 are simultaneously connected with the PLC controller 2 signal, and the PLC controller 2 is also simultaneously connected with the drive motor 3 of the ring-cooling ash unloading trolley, the ring-cooling ash unloading valve 4 of the ring-cooling ash unloading trolley, and the host computer 5 signal connection, and the host computer 5 is connected with the alarm 6 signal; the PLC controller 2 can control the drive motor 3 and the ring-cooling ash unloading valve 4 to act according to the trolley arrival signal sent when the proximity switch 1 is touched by the proximity switch board, so that the ring-cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the moving time of the ring-cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range, and if it exceeds the preset safety time range, the ring-cooling trolley fault signal is sent to the host computer; the host computer 5 can receive the ring-cooling trolley fault signal sent by the PLC controller 2 and control the alarm 6 to sound an alarm;
[0013] In this embodiment, the PLC controller 2 includes: a PLC slave station 21 connected to the drive motor 3 of the ring-cooling ash unloading trolley, the ring-cooling ash unloading valve 4 of the ring-cooling ash unloading trolley, and all the proximity switch 1 signals, and a PLC master station 22 connected to the PLC slave station 21 and the host computer 5 signals at the same time, the PLC slave station 21 is used to send the trolley arrival signal sent by the proximity switch 1 to the PLC master station 22, and at the same time send the drive motor and the ring-cooling ash unloading valve control signal sent by the PLC master station 22 to the drive motor and the ring-cooling ash unloading valve; the PLC master station 22 is used to receive the trolley arrival signal sent by the PLC slave station 21, and send a control signal to the drive motor 3 and the ring-cooling ash unloading valve 4 through the PLC slave station 21, so as to control the drive motor 3 and the ring-cooling ash unloading valve 4 to operate, so that the ring-cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the moving time of the ring-cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range, and if it exceeds the preset safety time range, a ring-cooling trolley fault signal is sent to the host computer 5. No.; in the present embodiment, it also includes a human infrared sensing switch 7 installed at the front end of the ring-cooling ash unloading trolley for judging whether there is a person in front of the ring-cooling ash unloading trolley, and the human infrared sensing switch 7 is connected to the PLC master station 22 signal through the PLC slave station 21. When the PLC master station 22 receives the sensing signal, it will control the drive motor 3 to stop the action through the PLC slave station 21, so that the ring-cooling ash unloading trolley stops, which can improve the operation stability and use safety of the system; in the present embodiment, it also includes a motor brake device 8 that can brake the drive motor 3 of the ring-cooling ash unloading trolley, and the motor brake device 8 is connected to the PLC master station 22 signal through the PLC slave station 21. When the PLC master station 22 controls the drive motor 3 to stop the action through the PLC slave station 21, the PLC master station 22 will simultaneously control the motor brake device 8 through the PLC slave station 21 to brake the drive motor 3, so that the ring-cooling ash unloading trolley can stop in time, further improving the operation stability and use safety of the system; in the present embodiment, the alarm 6 is an audible and visual alarm.
[0014] The working principle of the present invention is as follows:
[0015] The upper computer 5 sends a motor start signal to the PLC master station 22. After receiving the motor start signal, the PLC master station 22 will control the drive motor 3 to move, so that the drive motor 3 synchronously drives the ring cooling ash unloading trolley to move along the trolley track to the ash unloading point. When the burning wire ring cooling trolley moves along the trolley track until its proximity switch plate touches the proximity switch 1, the proximity switch 1 will send a trolley arrival signal to the PLC master station 22. After receiving the trolley arrival signal, the PLC master station 22 will control the drive motor 3 to stop the action and control the motor brake device 8 to brake the drive motor 3 through the PLC slave station 21, so that the ring cooling ash unloading trolley stops at the ash unloading point in time. Then the PLC master station 22 will control the opening of the ring cooling ash unloading valve 4 through the PLC slave station 21, so that the ring cooling ash unloading trolley performs the ash unloading operation at the ash unloading point. After completing the ash unloading time preset by the upper computer 5, the PLC master station 22 The ring cooling ash unloading valve 4 will be closed through the PLC slave station 21, and the motor brake device 8 will release the drive motor 3, and then the drive motor 3 will be restarted, so that the drive motor 3 will drive the ring cooling ash unloading trolley along the trolley track to the next ash unloading point to unload ash, and the above operations will be repeated to realize the automatic unloading of the ring cooling ash unloading trolley; and when the ring cooling ash unloading trolley is unloading ash at each ash unloading point, the PLC master station will determine in real time whether the movement time of the ring cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range. If it exceeds the preset safety time range, a ring cooling trolley fault signal will be sent to the upper computer 5. After receiving the ring cooling trolley fault signal sent by the PLC controller 2, the upper computer 5 will control the alarm 6 to emit an audible and visual alarm, and the text "The ring cooling ash unloading trolley is faulty, please go to the site for confirmation in time" will flash on the upper computer screen, so that the operator can detect the trolley abnormality in time.
[0016] The beneficial effects of the present invention are: (1) it can automatically control the ring cooling ash unloading trolley to unload ash in time, avoiding the occurrence of production quality accidents caused by untimely unloading, improving the stability of the production process and the stability of the furnace charge quality, and greatly reducing the labor intensity of the operators; (2) it can monitor the operation status of the ring cooling ash unloading trolley in real time. When an accident occurs to the ring cooling ash unloading trolley, a striking alarm prompt or sound alarm can be popped up on the upper computer screen, so that the operator can find the abnormality of the trolley in time, thereby improving the operation stability and use safety of the system.
Claims
1. An automatic ash unloading control system for an annular cooling ash unloading trolley, characterized in that: A proximity switch is installed on the trolley track at each ash unloading point, and a proximity switch board matched with the proximity switch is installed on the ring-cooling ash unloading trolley. All proximity switches are connected to the PLC controller signal at the same time. The PLC controller is also connected to the drive motor of the ring-cooling ash unloading trolley, the ring-cooling ash unloading valve of the ring-cooling ash unloading trolley, and the upper computer signal. The upper computer is connected to the alarm signal; the PLC controller can control the drive motor and the ring-cooling ash unloading valve to operate according to the trolley arrival signal sent when the proximity switch is touched by the proximity switch board, so that the ring-cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the moving time of the ring-cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range. If it exceeds the preset safety time range, a ring-cooling trolley fault signal is sent to the upper computer; the upper computer can receive the ring-cooling trolley fault signal sent by the PLC controller and control the alarm to sound an alarm; The PLC controller includes: a PLC slave station connected to the drive motor of the ring-cooling ash unloading trolley, the ring-cooling ash unloading valve of the ring-cooling ash unloading trolley, and all proximity switch signals, and a PLC master station connected to the PLC slave station and the host computer signal at the same time, the PLC slave station is used to send the trolley arrival signal sent by the proximity switch to the PLC master station, and at the same time send the drive motor and the ring-cooling ash unloading valve control signal sent by the PLC master station to the drive motor and the ring-cooling ash unloading valve; the PLC master station is used to receive the trolley arrival signal sent by the PLC slave station, and send the control signal to the drive motor and the ring-cooling ash unloading valve through the PLC slave station, so as to control the action of the drive motor and the ring-cooling ash unloading valve, so that the ring-cooling ash unloading trolley automatically unloads ash at the ash unloading point, and at the same time can judge in real time whether the movement time of the ring-cooling ash unloading trolley between two adjacent ash unloading points exceeds the preset safety time range, and if it exceeds the preset safety time range, send a ring-cooling trolley fault signal to the host computer; It also includes a human infrared sensor switch installed at the front end of the ring-cooling ash unloading trolley for judging whether there is a person in front of the ring-cooling ash unloading trolley. The human infrared sensor switch is connected to the PLC master station signal through the PLC slave station. When the PLC master station receives the sensing signal, it controls the driving motor to stop the action through the PLC slave station, so that the ring-cooling ash unloading trolley stops. It also includes a motor brake device that can stop the driving motor of the ring-cooled ash unloading trolley. The motor brake device is connected to the PLC master station signal through the PLC slave station; the alarm is an audible and visual alarm.