Filter plate scraping mechanism and filter press

The invention discloses a filter plate scraping mechanism and a filter press, and relates to the technical field of solid-liquid separation equipment, the filter plate scraping mechanism comprises a scraping frame, two groups of first scraping assemblies used for simultaneously scraping two adjacent filter plates are oppositely arranged on the scraping frame, and first scraping plates matched with the width of concave cavities of the filter plates are arranged on the first scraping assemblies; two groups of second scraping assemblies which are oppositely arranged are respectively mounted at two ends of the first scraping assembly on the scraping frame; the second scraping assemblies are provided with second scraping plates; the first expansion assembly is connected with the first scraping plate assembly and the scraping frame, the second expansion assembly is connected with the second scraping plate assembly and the scraping frame, the first expansion assembly drives the first scraping plate to abut against t