The weighing and unloading system adds the required materials into the mixing bin in turn according to a certain ratio. At the same time, PLC monitors the pulse signal sent by the material level meter to determine the position of the material in the bin, so as to control the on-off of the charging valve; After the feeding is completed, according to the preset mixing delay time, the PLC starts the mixing motor to ensure that the material is fully stirred in the mixing bin to complete the mixing operation; Then enter the discharge and pressing stage, the PLC controls the discharge valve action, the material is output from the mixing bin, pressed into the storage tank, complete a cycle of automatic batching control process.
020-34563445The feeding system is mainly used for batching control and complete automatic control of liquid dispensing, mixing and stirring process. According to the pre-set raw material ratio and process configuration, it meets the supporting requirements of high-speed mixing automatic batching, and realizes the control of all material weighing and feeding and batching, so as to control the entire batching process more accurately and ensure the accurate execution of the formula. Using a very low rate of RS485 serial communication mode, the unique digital filter patent technology is also fully competent for this task. In each scanning cycle, MODBUS only needs to collect a single weight data that has been digitally filtered from the terminal through the RS485 bus network for subsequent processing.
The feeding system is equipped with the function of automatic correction of the ratio. When feeding, the deviation in the feeding process is monitored through the screen, and the feeding ratio is automatically corrected according to the proportion of the formula to ensure the accuracy of the formula. Can contact with the customer's pipe system, through parameter setting, automatically according to the order to be produced to determine the amount of liquid, so as to reduce the waste of curing agent; After the initial input of the formula, when the customer needs to adjust the formula, there is no need to calculate the change of the material, just directly input the result of the change of the liquid, the program can automatically modify the formula; Equipped with automatic purge function, when each mixed reaction tank liquid delivery after automatic blowing, to avoid resin tube clogging.
The storage is equipped with a weighing mixer and a vibrating Feeder, and alloy steel Weighing modules with high and low levels are provided. The role of the vibrator is to shake loose, shake loose, so as not to form a block when adding material; When there is a high level signal output, it can not be added to the tank, when below the minimum level, the system automatically alarm and start the vibrator automatic feed. The system has alarm signals such as lack of material, charging failure, overtemperature, charging timeout and equipment failure. In order to keep the fluidity of the solvent in the main tank, steam heating and corresponding temperature control equipment are also set up in addition to the stirring device. The temperature control unit is equipped with a temperature measuring point (using a platinum resistance temperature measuring element), a steam control valve and a temperature secondary instrument with RS485 bus communication interface, temperature setting range of 10 to 50 degrees Celsius (can be set by the touch screen), control deviation within +/-2 degrees Celsius. The data communication between MODBUS and the thermometer is carried out through RS485 bus, and the two-position intermittent temperature control with dead zone is realized according to the pre-programmed program.
