The invention provides a multi-stage filtering device for ultrahigh-temperature
sterilized milk processing, and relates to the technical field of milk filtering, the multi-stage filtering device comprises a sealing tank, the interior of the sealing tank is fixedly connected with a partition plate, the partition plate and the inner wall of the top of the sealing tank form a flow dividing cavity, and the outer wall of the sealing tank is fixedly provided with a pressurized liquid inlet
pipe communicated with the flow dividing cavity. Multi-stage
filtration is performed on milk through the first-stage filter
cartridge and the second-stage filter
cartridge, impurities on the outer surface of the first-stage filter
cartridge are cleaned through the outer cleaning
assembly and accumulated at the bottom of the first-stage
precipitation cavity, and impurities on the inner walls of the first-stage filter cartridge and the second-stage filter cartridge are cleaned through the inner cleaning
assembly and the second-stage cleaning
assembly. And the settled impurities can be effectively discharged only by opening the
slag discharge valve. Aiming at high-temperature
sterilized milk containing
colloid and flocculent precipitates, the device can effectively clean the filter screen and effectively separate precipitated impurities, the replacement frequency of the filter screen can be reduced, and the filtering efficiency is improved.