Backwash filter

Abstract

The invention discloses a backwash filter comprising a housing, a microporous filter cartridge fixedly disposed inside the housing, an upper sealing cover disposed on the upper portion of the housingand a lower sealing cover disposed on the lower portion of the housing. The upper side of the housing is provided with a filter aid inlet, and the inner side of the filter aid inlet is communicated with a filter aid pre-coating device. The filter aid pre-coating device includes a cross rod disposed on the upper side inside the housing, two hydraulic cylinders fixedly disposed below the cross rod,a connecting cross rod fixedly disposed at the top ends of hydraulic cylinder shafts and a precoating port communicated with the filter aid inlet through a connecting hose. The precoating port is fixedly disposed on the connecting cross rod and disposed corresponding to the microporous filter cartridge. The backwash filter has the advantages of high filtering speed, wide application range and highautomation degree.

Description

technical field [0001] The invention relates to the field of microporous filtration, in particular to a backwash filter. Background technique [0002] Microporous precision filter is a kind of membrane separation technology. The filter is a cylindrical cylindrical structure made of 304 or 316L stainless steel, with a folded filter element as the filter element, which can filter out particles above 0.1 μm in liquid and gas. And bacteria, often used in the precision filtration of micron-level materials in pharmaceutical, food, chemical and other industrial production. It has the advantages of high filtration precision, fast filtration speed, less adsorption, no medium shedding, no leakage, acid and alkali corrosion resistance, and convenient operation. It can remove bacteria and particles in water for injection and liquid medicine. Due to its slow filtration speed, it is required to be backflushed during cleaning. After each batch of materials is filtered, the remaining materi...

AI Technical Summary

Problems solved by technology

[0002] Microporous precision filter is a kind of membrane separation technology. The filter is a cylindrical cylindrical structure made of 304 or 316L stainless steel, with a folded filter element as the filter element, which can filter out particles above 0.1 μm in liquid and gas. And bacteria, often used in the precision filtration of micron-level materials in pharmaceutical, food, chemical and other industrial production. It has the advantages of high filtration precision, fast filtration speed, less adsorption, no medium shedding, no leakage, acid and alkali corrosion resistance, and convenient operation. It can remove bacteria and particles in water for injection and liquid medicine. Due to its slow filtration speed, it is required to be backflushed during cleaning. After each batch of materials is filtered, the remaining materials can be cleaned and backflushed, which can be reused. , The microporous precision filter is equipped with a microporous filter element (microporous PA tube or metal tube, etc.). In the prior art, in order to speed up the filtration speed, the method adopted is the pressurized filtration method, but this method needs to be strictly controlled. The pressure difference rises, otherwise the microporous tube filter element is easy to be blocked, and the clarity of the filtrate is difficult to guarantee

Images