The adjustable speed feeding system uses Roots vacuum pump to pump the pipeline and weighing tank into a certain vacuum state, and separates the powder from the gas through the filter bag, and the gas is discharged into the atmosphere. The porous plate inside the whole fluidized weighing chamber is arranged according to a certain slope (4%-10%). The fly ash enters the combined pump from the separator, and the combined pump enters the fluidization weighing bin. The charging equipment is added to the breathable layer of the charging port of the upper shell. The air enters the lower shell from the fluidized bin and passes through the breathable layer along the fluidized bin to fluidize the fly ash. The positive pressure generated by the air compressor or Roots fan is sent out or into the positive pressure conveying equipment, and the material is sent to the bulk material weighing bin through the feeding pipe. The clean air is discharged from the upper part of the separator through the exhaust pipe and discharged into the atmosphere from the Roots blower (vacuum pump) exhaust port.
020-34563445The feeding system takes the batching controller as the core, and controls other equipment to complete the batching. The raw materials fall into the hopper scale from the bin driven by the skewer, and different materials are transported respectively. The speed of skewer operation is adjusted by the frequency conversion governor according to the output voltage of the batching controller. In actual batching, the formula and batch of the batching are set through the batching controller keyboard, the weighing instrument automatically selects the required bin, sends instructions to drive the winch motor, and makes the material fall into the weighing bucket. The weighing signal is output through the weighing module on the weighing bucket, and the frequency conversion governor is controlled by the batching weighing display to adjust the winch speed and control the feed amount, so that the final value reaches sufficient accuracy. At the end of the dosing, the door is automatically opened, and the material enters the mixer for mixing. The dosing controller automatically calculates the mixing time, and releases the finished material when the mixing is finished.
The dosing machine mainly consists of the storage and measurement of raw materials, the modulation, storage and transportation of finished materials, and is responsible for the ratio modulation, storage and on-site feeding and adding. The prepared finished products are sent into the storage tank by the mixer for storage, and are quantitatively transported to each control system in the workshop according to the material signal of each material on site, and then the ratio tracking dosing is realized in the control system. Using the Roots vacuum pump controlled by frequency conversion, the material flows through the vacuum to the silo, and then sent to the mixer, the mixer is equipped with a weighing module, and connected to the junction box, a speed measurement module, the signal passes through the junction box to the weighing instrument, the weighing instrument will analog signal and pulse signal to the PLC, the PLC output DO signal to the computer after processing, to monitor the operation. The PLC transmits the instructions issued by the computer to the weighing instrument for processing. The data fed back to the computer after the flow set by the weighing instrument will be converted into a digital signal output to the computer screen to control the instantaneous flow.
