Also known as temporary filters, cone-shaped filters, also known as temporary filter, as the name suggests its shape for the cone, part of the piping form most simple filter coarse filter series, installed on the pipeline can remove large solid impurities from the fluid, making machinery and equipment (including compressors, pumps, and so on), the instrument work properly and running, stable processes guarantee safety role. When the fluid must enter the location specification after the filter cartridge, the impurities are blocked, and clean filtrate from filter egress, when cleaning is needed, just take out the removable filter cartridges, reload after the treatment, therefore, maintenance is very convenient.