A control system for a wood shredding production line

Abstract

This invention proposes a control system for a wood pulverizing production line, comprising coarse pulverizing equipment, transfer hopper equipment, and fine pulverizing equipment. It includes a PLC, and coarse pulverizing input acquisition unit, coarse pulverizing output control unit, transfer hopper input acquisition unit, transfer hopper output control unit, fine pulverizing input acquisition unit, and fine pulverizing output control unit, all electrically connected to the PLC. It also includes an HMI (Hardware Interface) connected to the PLC via signal transmission. This invention uses the PLC to collect real-time information on the main motor bearing temperature, motor operating current, and hopper material level during equipment operation. The PLC's internal control logic automatically controls the equipment operation, reducing manual labor. Simultaneously, to ensure safe operation, the PLC can monitor equipment operating data in real time. When abnormal operating data occurs, the PLC stops the equipment and pushes corresponding alarm information to the HMI, allowing the operator to promptly understand the equipment's operating status.

Description

Technical Field

[0001] This utility model relates to a control system, specifically a control system for a wood pulverizing production line. Background Technology

[0002] Currently, most of the control of the wood shredding production line is done manually, with at least one operator for each process. This manual control method increases the input of human resources. At the same time, operators cannot predict the failure of the production line equipment. They can only discover the failure when the equipment stops. Therefore, the production line has poor stability and a high failure rate. Utility Model Content

[0003] This utility model addresses the aforementioned technical problems by proposing a control system for a wood crushing production line. This system can automatically control the operation of the coarse crushing equipment, the transfer silo equipment, and the fine crushing equipment. Simultaneously, when abnormal equipment operation data occurs, the PLC pushes abnormal information to the HMI, facilitating timely detection and resolution of problems in the production line equipment by staff.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a control system for a wood pulverizing production line, the wood pulverizing production line includes coarse pulverizing equipment, transfer silo equipment and fine pulverizing equipment, wherein the coarse pulverizing equipment has a main motor, a feeding motor and a discharging motor, the transfer silo equipment has a lifting motor and a scraper motor, and the fine pulverizing equipment has a pneumatic conveying motor for the main motor and the feeding motor.

[0005] The control system includes: a PLC, and a coarse crushing input acquisition unit, a coarse crushing output control unit, a transfer hopper input acquisition unit, a transfer hopper output control unit, a fine crushing input acquisition unit, and a fine crushing output control unit, all electrically connected to the PLC; it also includes an HMI, which is connected to the PLC via signals.

[0006] The PLC receives, analyzes, and processes real-time information on the main motor current and spindle temperature of the coarse crushing equipment monitored by the coarse crushing input acquisition unit, the material level of the transfer hopper equipment monitored by the transfer hopper input acquisition unit, and the main motor current and spindle temperature of the fine crushing equipment monitored by the fine crushing input acquisition unit. It then sends the processed information to the corresponding coarse crushing output control unit, transfer hopper output control unit, and fine crushing output control unit. The coarse crushing output control unit controls the start or stop of the main motor, feeding motor, and unloading motor in the coarse crushing equipment; the transfer hopper output control unit controls the start or stop of the lifting motor and scraper motor in the transfer hopper equipment; and the fine crushing output control unit controls the start or stop of the main motor, feeding motor, and pneumatic conveying motor in the fine crushing equipment. Finally, it displays the equipment operating status and alarm information via the HMI.

[0007] Preferably, the coarse crushing input acquisition unit, the transfer hopper input acquisition unit, and the fine crushing input acquisition unit all include an analog signal acquisition module, which is electrically connected to the PLC. The coarse crushing output control unit, the transfer hopper output control unit, and the fine crushing output control unit all include a drive circuit, which is electrically connected to the PLC.

[0008] Preferably, both the coarse crushing input acquisition unit and the fine crushing input acquisition unit further include a temperature sensor and a current transformer, which are electrically connected to the corresponding analog quantity acquisition module.

[0009] Preferably, the transfer hopper input acquisition unit further includes a material level sensor, which is electrically connected to the corresponding analog quantity acquisition module.

[0010] Preferably, both the coarse crushing output control unit and the fine crushing output control unit further include a soft starter electrically connected to the PLC; the soft starters of the coarse crushing output control unit and the fine crushing output control unit are electrically connected to their respective main motors, and the drive circuits are electrically connected to their respective feeding motors and unloading motors.

[0011] Preferably, the drive circuit of the transfer hopper output control unit is electrically connected to the lifting motor and the scraper motor.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: by collecting real-time information on motor operating current, bearing temperature, and material level in the transfer hopper during the production process through the coarse crushing input acquisition unit, the transfer hopper input acquisition unit, and the fine crushing input acquisition unit, the automatic operation of the coarse crushing equipment, the transfer hopper equipment, and the fine crushing equipment is automatically controlled. At the same time, when abnormal equipment operating data occurs, the PLC pushes abnormal information to the HMI, which facilitates the staff to discover and solve problems in the production line equipment in a timely manner. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the system connection of this utility model. Detailed Implementation

[0015] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0016] A control system for a diseased wood shredding production line, see [link / reference] Figure 1 ,

[0017] The infected wood crushing production line includes coarse crushing equipment, transfer silo equipment, and fine crushing equipment;

[0018] Among them, the coarse crushing equipment has a main motor, a feeding motor and a discharging motor, the intermediate silo equipment has a lifting motor and a scraper motor, and the fine crushing equipment has a main motor, a feeding motor and a pneumatic conveying motor.

[0019] The control system includes:

[0020] The coarse crushing input acquisition unit is used to monitor the real-time operating current and spindle temperature of the main motor of the coarse crushing equipment in the coarse crushing production line. The coarse crushing input acquisition unit includes an analog signal acquisition module, a temperature sensor, and a current transformer. The temperature sensor and the current transformer are electrically connected to the analog signal acquisition module, which is electrically connected to the PLC. The analog signal acquisition module is an RS485 analog signal acquisition module. Further, the temperature sensor is used to monitor the operating temperature of the main motor spindle. Two temperature sensors are provided and are installed on the main motor spindle bearings to monitor the operating temperature of the main motor spindle in real time. The current transformer is used to monitor the operating current of the main motor. The current transformer is installed on the main circuit of the main motor to monitor the operating current of the main motor in real time. The temperature sensor and the current transformer are electrically connected to the RS485 analog signal acquisition module and transmit the data to the PLC through the RS485 interface.

[0021] The transfer silo input acquisition unit is used to monitor the real-time information of the material level in the transfer silo equipment of the wood pulverizing production line. The transfer silo input acquisition unit includes a material level sensor and an analog quantity acquisition module. The analog quantity acquisition module is electrically connected to the material level sensor. The analog quantity acquisition module is an RS485 analog quantity acquisition module. Further, the material level sensor is a radar level gauge. One material level sensor is installed directly above the transfer silo to monitor the real-time information of the material level in the transfer silo. The material level sensor is electrically connected to the RS485 analog quantity acquisition module and transmits the data to the PLC through the RS485 interface.

[0022] The fine crushing input acquisition unit is used to monitor the real-time operating current and spindle temperature of the main motor of the fine crushing equipment in the wood crushing production line. The fine crushing input acquisition unit includes an analog signal acquisition module, a temperature sensor, and a current transformer. The temperature sensor and the current transformer are electrically connected to the analog signal acquisition module, which is electrically connected to the PLC. The analog signal acquisition module is an RS485 analog signal acquisition module. Further, the temperature sensor is used to monitor the operating temperature of the main motor spindle. Two temperature sensors are installed, one on the main motor spindle bearing, to monitor the operating temperature of the main motor spindle in real time. The current transformer is used to monitor the operating current of the main motor. The current transformer is installed in the main circuit of the main motor to monitor the operating current of the main motor in real time. The temperature sensor and the current transformer are electrically connected to the RS485 analog signal acquisition module, and the data is transmitted to the PLC through the RS485 interface.

[0023] The coarse crushing output control unit is used to control the start and stop of the main motor, feeding motor and unloading motor of the coarse crushing equipment in the wood crushing production line. The coarse crushing output control unit includes the main motor, feeding motor, unloading motor, soft starter and drive circuit. The main motor is electrically connected to the soft starter, the feeding motor and unloading motor are electrically connected to the drive circuit, and the soft starter and drive circuit are electrically connected to the PLC.

[0024] Furthermore, the PLC is electrically connected to the coarse crushing input acquisition unit and the transfer hopper input acquisition unit to receive, analyze, and process the data information from these units. It also controls the main motor, the feeding motor, and the unloading motor. During operation, when the main motor's spindle operating temperature exceeds the set upper limit, the main motor stops working until the temperature returns to normal. When the main motor's operating current exceeds the set upper limit, the feeding motor stops working until the current returns to normal. When the hopper material level exceeds the set upper limit, both the feeding and unloading motors stop until the hopper material level falls below the set lower limit.

[0025] The transfer hopper output control unit is used to control the start and stop of the lifting motor and scraper motor of the transfer hopper equipment in the wood pulverizing production line. The transfer hopper output control unit includes a lifting motor, a scraper motor and a drive circuit. The lifting motor and scraper motor are electrically connected to the drive circuit, and the drive circuit is electrically connected to the PLC.

[0026] Furthermore, the PLC is electrically connected to the input acquisition unit of the transfer hopper to receive, analyze, and process the data information from the input acquisition unit of the transfer hopper. During operation, when the material level is higher than the upper limit, the scraper motor and the lifting motor start.

[0027] The fine crushing output control unit is used to control the start and stop of the main motor, feeding motor and pneumatic conveying motor of the fine crushing equipment in the wood crushing production line. The fine crushing output control unit includes the main motor, feeding motor, pneumatic conveying motor, soft starter and drive circuit. The main motor is electrically connected to the soft starter, the feeding motor and the pneumatic conveying motor are electrically connected to the drive circuit, and the soft starter and drive circuit are electrically connected to the PLC.

[0028] Furthermore, the PLC is electrically connected to the fine crushing input acquisition unit to receive, analyze, and process the data information from the fine crushing input acquisition unit, and to control the main motor, the feeding motor, and the pneumatic conveying motor. During operation, the pneumatic conveying motor is always running. When the operating temperature of the main motor's spindle exceeds the upper limit of the temperature setting, the main motor stops working until the temperature returns to normal. When the operating current of the main motor exceeds the upper limit of the current setting, the feeding motor stops working until the current returns to normal.

[0029] When equipment malfunctions, fault information can be viewed through the HMI.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A control system for a diseased wood crushing production line, the diseased wood crushing production line comprising coarse crushing equipment, intermediate material transfer silo equipment, and fine crushing equipment, characterized in that: The control system includes a PLC, and a coarse crushing input acquisition unit, a coarse crushing output control unit, a transfer hopper input acquisition unit, a transfer hopper output control unit, a fine crushing input acquisition unit, and a fine crushing output control unit, all electrically connected to the PLC. It also includes an HMI, which is connected to the PLC via signals. The PLC receives, analyzes, and processes real-time information on the main motor current and spindle temperature of the coarse crushing equipment monitored by the coarse crushing input acquisition unit, the material level of the transfer hopper equipment monitored by the transfer hopper input acquisition unit, and the main motor current and spindle temperature of the fine crushing equipment monitored by the fine crushing input acquisition unit. It then sends the processed information to the corresponding coarse crushing output control unit, transfer hopper output control unit, and fine crushing output control unit. The coarse crushing output control unit controls the start or stop of the main motor, feeding motor, and unloading motor in the coarse crushing equipment; the transfer hopper output control unit controls the start or stop of the lifting motor and scraper motor in the transfer hopper equipment; and the fine crushing output control unit controls the start or stop of the main motor, feeding motor, and pneumatic conveying motor in the fine crushing equipment. Finally, it displays the equipment operating status and alarm information via the HMI.

2. The control system for a vaccine wood comminution line of claim 1, wherein: The coarse crushing input acquisition unit, the transfer hopper input acquisition unit, and the fine crushing input acquisition unit all include an analog quantity acquisition module, which is electrically connected to the PLC. The coarse crushing output control unit, the transfer hopper output control unit, and the fine crushing output control unit all include a drive circuit, which is electrically connected to the PLC.

3. The control system for a vaccine wood comminution line of claim 2, wherein: Both the coarse crushing input acquisition unit and the fine crushing input acquisition unit also include a temperature sensor and a current transformer, which are electrically connected to the corresponding analog quantity acquisition module.

4. The control system for the vaccine wood pulverizing production line according to claim 2, characterized in that: The transfer silo input acquisition unit also includes a material level sensor, which is electrically connected to the corresponding analog quantity acquisition module.

5. The control system for a vaccine wood comminution line of claim 2, wherein: Both the coarse crushing output control unit and the fine crushing output control unit also include a soft starter electrically connected to the PLC; the soft starters of the coarse crushing output control unit and the fine crushing output control unit are electrically connected to their respective main motors, and the drive circuits are electrically connected to their respective feeding motors and unloading motors.

6. The control system for a medicinal wood comminution line of claim 2, wherein: The drive circuit of the transfer hopper output control unit is electrically connected to the lifting motor and the scraper motor.

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