The large-scale brand diatomite filter. The suspension liquid is pumped into the paperboard box filter through a material pump. Each sealed filter chamber is placed inside. Under the pressure, the filtrate passes through the filter layer and filter cloth, and exits through the liquid outlet of the filter cloth. The filter residue remains inside the filter box. Thus, the purpose of solid-liquid separation is achieved. The filter box and filter plate of the diatomite filter are sealed by paperboard or filter materials themselves. It is a kind of stainless steel plate box precision filter machine (also known as stainless steel paperboard filter machine), with a relatively large filtration capacity and a filtration area of over 2 m2. Below it is equipped with a fixed horizontal rod for placing paperboard, which is easy and convenient to install and place filter materials. It can be used to filter various health drinks and wines with precise sterilization paperboard, achieving sterilization effects.