Cleaning and separating system and method for dynamically adjusting rotating speed of peristaltic pump

The invention relates to a cleaning and separating system and a peristaltic pump rotating speed dynamic adjusting method, and the cleaning and separating system comprises a cleaning assembly which comprises a plurality of cleaning needle modules, and the cleaning needle modules comprise waste liquid pumping needles; the peristaltic pump assembly is provided with suction ports with the number not smaller than that of the waste liquid suction needles, and the waste liquid suction needles are connected with the suction ports of the peristaltic pump assembly one by one through pipelines; and the pressure monitoring module is mounted on a pipeline between the waste liquid pumping needle and the peristaltic pump assembly. The pressure in the pipeline is monitored through the pressure monitoring module, and then the state of the cleaning needle module is obtained and is basically not affected by the liquid state in the pipeline, the bubble amount, the pipeline color change and dirt attachment. Due to the fact that t