Automatic backwashing system in filtering device with multi filter drums

Abstract

The invention discloses an automatic backwashing system in a filtering device with multi filter drums. The automatic backwashing system is characterized in that: a motor drives a main shaft to rotate; a lifting system drives a rotating shaft to ascend and descend; a multi-way connecting base connects the main shaft, a rotary arm and a drainage pipe together; the main shaft drives the rotary arm to ascend and descend and rotate; the drainage pipe stays still; a suction nozzle, which can be connected with a water inlet on a separating plate in a sealing way, is fixed at an upper port of the rotary arm; an end of the drainage pipe is connected with an electric drainage valve or a pneumatic drainage valve; and a control system controls action of the motor, the lifting mechanism and the electric drainage valve or the pneumatic drainage valve. By using the filtering device disclosed by the invention, when one filter drum backwashes, other filter drums keep on filtering, therefore, water yield is not influenced at all; since backwashing water flow is high in magnitude, filter screens of the filter drums can be washed more cleanly and more thoroughly, therefore, the backwashing effect is good, the backwashing frequency is low, and the backwashing water can be saved; during rotation of the automatic backwashing system, the suction nozzle and the separating plate are separated, thus relative friction between the suction nozzle and the separating plate can be avoided, and the service life of the suction nozzle can be prolonged; and in addition, all components are connected mutually with high reliability and good sealing performance.

Description

technical field [0001] The invention relates to an automatic backwashing system in a multi-filter cartridge filter device. Background technique [0002] In the fields of metallurgy, electric power, petroleum, chemical industry, medicine, food, printing and dyeing, papermaking, urban water supply, central air conditioning, river water purification, reclaimed water treatment, agricultural irrigation, sewage treatment, etc. In the filtration and separation process of water, emulsion and other fluids in the system, many enterprises still use traditional filtration equipment. [0003] The filter cartridge structure of traditional filter equipment mostly adopts a single filter cartridge filter structure or a multi-filter filter structure in which multiple different filter elements are superimposed. Multi-filter filter equipment filters layer by layer, and the filter effect is good, but the amount of filtered water is small, the water output of the filter equipment is small, and i...

AI Technical Summary

Problems solved by technology

The backwashing system still has the following disadvantages: (1) the effect of backwashing is poor, and when the blockage is serious, the filter cartridge needs to be manually disassembled for cleaning, which consumes manpower and material resources; low efficiency

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