Drum-shaped precision filter

Abstract

The invention discloses a drum-shaped precision filter which comprises a rotary filter cartridge. The filter cartridge is a cartridge in the shape of a circular drum and is supported on a framework by a central support shaft, and bearings are arranged at two ends of the central support shaft; a water inlet is formed in an opening side of the filter cartridge, and sewage can flow into the filter cartridge; the filter cartridge can be driven by a driving device via a transmission mechanism to slowly rotate; a washing pipe is arranged on the outer side of the top of the filter cartridge, and a residue collecting hopper is arranged inside the filter cartridge and is positioned below the washing pipe. The drum-shaped precision filter has the advantages that stainless steel finished plates are punched to obtain support modules for individual filter units, and a filter screen is a stainless steel woven mesh and is good in corrosion resistance and impact resistance; the operating weight of the filter cartridge can be reduced to a great extent owing to intermediate support and intermediate transmission designs, the drum-shaped precision filter can bear long-term uninterrupted operating modes, the service life of equipment can be greatly prolonged, and the reliability of the equipment can be greatly improved; the filter cartridge is low in rotational speed, and accordingly the rotary bearings of the central support shaft are hardly abraded; good washing effects can be realized by the drum-shaped precision filter, and the drum-shaped precision filter is excellent in sewage treatment index.

Description

technical field [0001] The invention relates to the field of environmental protection water treatment equipment, in particular to a drum type precision filter. Background technique [0002] The precision filter is a machine that uses gravity or pressure difference to make the suspended matter pass through a certain porous medium, so that the solid particles are trapped, and the effective separation of solid and liquid in the suspension is realized. Most of the precision filters in the prior art use fiber turntable filter equipment, which adopts the design structure of external water inlet and internal water outlet. The fiber filter is installed vertically on the central outlet cylinder, and the backwashing device is installed on both sides of the fiber filter. The water flows in from the outside, and the water flows through the fiber filter and then flows into the center outlet cylinder, resulting in slow filtration flow rate, small filtration area, and the shortcoming that ...

AI Technical Summary

Problems solved by technology

Most of the precision filters in the prior art use fiber turntable filter equipment, which adopts the design structure of external water inlet and internal water outlet. The fiber filter is installed vertically on the central outlet cylinder, and the backwashing device is installed on both sides of the fiber filter. The water flows in from the outside, and the water flows through the fiber filter and then flows into the center outlet cylinder, resulting in slow filtration flow rate, small filtration area, and the shortcoming that the fiber filter cloth is easy to accumulate suspended matter and breed microorganisms. Long-term use of the filter cloth is easy to leave dirt and microorganisms, thus It leads to unclean cleaning, damage to the filter surface, and unguaranteed filtration accuracy; and the filter cloth is installed on the nylon support frame, which is heavy in weight, heavy in operation load, and serious in equipment loss.

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