... could reinforced the squeezing of polypropylene, rubber, cast iron, stainless steel, the diaphragm and other material and structure. The application scope ... , turn the handwheel, through the small teeth faint, big gear, drive the ball screw promote pressure plate, will be located at ... filter device, the main parts are small teeth faint, big gear, ball screw, etc. 8. The whole machine structure design ...