Control method and device for adjusting feeding speed of sand making building and sand making building

Abstract

The invention provides a control method and device for adjusting the feeding speed of a sand making building and the sand making building. The sand making building comprises a sand making machine and a feeding machine, the sand making machine comprises a sand making motor used for controlling the sand making amount, and the feeding machine comprises a feeding motor used for controlling the feeding speed. The control method for adjusting the feeding speed of the sand making building comprises the steps that the target current value of the sand making motor is obtained; a current value when the sand making motor works is obtained to obtain a measured current value; and the feeding speed of the feeding motor is controlled according to the target current value and the measured current value. Compared with a traditional feeding amount control method, the operation current of the sand making machine does not need to be manually observed in real time, the feeding speed does not need to be manually adjusted, the feeding speed of the sand making machine can be automatically adjusted, and the production efficiency is improved. Meanwhile, the feeding amount of the feeding machine can be effectively controlled, stable current can be generated, the service life of the sand making machine is prolonged, overload of the motor can be effectively prevented, and the sand making machine can stably run within the target current range all the time.

Description

technical field [0001] The invention relates to the technical field of machine-made sand, in particular to a control method for adjusting the feeding speed of a sand-making building, a control device and a sand-making building. Background technique [0002] At present, with the rapid development of infrastructure construction, the demand for sand for concrete and mortar is also increasing year by year. The sand making building is widely used in the production of machine-made sand. , the given amount of raw materials is mainly controlled by the feeder. Therefore, in the existing scheme, it is proposed to divide the feeding speed control of the sand making building into manual control and semi-automatic control. In the manual mode, the operator needs to monitor the current value of the sand making machine in real time, and artificially reduce the feeding speed according to experience before overloading. After the current value drops below the rated current, in order to improv...

AI Technical Summary

Problems solved by technology

In the semi-automatic mode, the feeding speed will be reduced through the PLC when overloaded. If the overload is still there after a period of time, the feeding speed will be reduced again, but the feeding speed will not be automatically increased after the reduction, and it will run for a long time at low production efficiency. The state needs to be manually adjusted back

Therefore, in the prior art, it is necessary to manually adjust the feeding speed by observing the operating current of the sand making machine in real time, and when the feeding is too much, if the feeding speed is not reduced in time, the sand making machine will be overloaded for a long time and shut down, and the Too little feeding will cause low production efficiency and fail to meet production requirements

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