Precise liquid filtering apparatus

Abstract

The invention discloses a precise liquid filtering apparatus. The apparatus comprises a rotatable filter cylinder device, the rotatable filter cylinder device is provided with an ultrasonic wave or air explosion cleaning device, the filter cylinder device is connected with a liquid inlet tube, a liquid outlet tube and a waste discharging tube, the filter cylinder device communicates with a filter stock solution through the liquid inlet tube, the liquid inlet tube is provided with a circulating pump, the water outlet tube is provided with a vacuum pump, a filtered filtrate is pumped out by the vacuum pump, and the waste discharge tube communicates with the filter stock solution. The apparatus adopts a nuclear porous membrane or an effective compound of the nuclear porous membrane and other filter materials as a filter material reserves the filtration characteristics of a traditional filter material and the fine filtration effect of the nuclear porous membrane, and the apparatus adopting a cross flow filtration manner keeps pollutants on the surface of the filter membrane at a small level, alleviates the obstruction of filter pores, improves the filtering efficiency and prolongs the service life of the filter membrane.

Description

technical field [0001] The invention relates to the technical field of liquid filtration, in particular to a liquid precision filtration device used for edible, industrial liquid filtration, and treatment of waste water and waste liquid produced in industrial production or daily life. Background technique [0002] At present, the harmful substances contained in industrial and domestic wastewater mainly include particulate matter and organic matter. In addition to larger solids and bioflocculation particles, pathogenic bacteria, viruses, and microorganisms can also be classified as particulate matter, and their diameters are generally at the micron level. or above. [0003] Similarly, the particle separation of edible beverages such as wine and beverages, chemical emulsions and paints is also a matter of great concern in industrial production. [0004] Traditional particle separation filter elements are mostly made of deep filter materials such as non-woven fabrics, activate...

AI Technical Summary

Problems solved by technology

[0008] For dead-end filtration, driven by the pressure difference, the liquid and particles smaller than the pore size of the filter membrane pass through the micropores, and the particles larger than the pore size of the filter membrane are trapped on the surface of the filter membrane and accumulate on the membrane surface. In this case, If only the nuclear pore membrane filter layer with increased mechanical strength is used for filtration, the micropores are easily blocked by the retentate and affect the life of the filter membrane. Therefore, it is necessary to seek a "cross-flow" filtration technology that minimizes the retention of retentate on the membrane surface and equipment, so as to prolong the service life of the nuclear pore membrane and reduce the cost of use, it is the subject of our painstaking research

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