Centrifugal vortex type ballast water filtering device with self-adaptive cleaning function

Abstract

The invention relates to a centrifugal vortex type ballast water filtering device with a self-adaptive cleaning function, which comprises a filter cartridge assembly, a water suction pump, a filter screen filter cartridge, a sewage collection assembly and a pressure control assembly. The filter cartridge assembly is composed of two cascade conical vertical filter cartridges, and internal spiral threads are arranged on the inner surfaces of the conical vertical filter cartridges. The water suction pump is arranged at the front end of an inlet of a first-stage conical vertical filter cartridge.The filter screen filter cartridge is arranged at a water outlet of a second-stage conical vertical filter cartridge. The sewage collection assembly comprises a sewage discharge pipeline communicatedwith sewage discharge outlets of the two stages of conical vertical filter cartridges simultaneously, sewage discharge valves arranged at the sewage discharge outlets, a sewage suction pump arranged on the sewage discharge pipeline and a sewage collector. The pressure control assembly is used for achieving self-adaptive control over the opening degree of the sewage discharge valves at the sewage discharge outlets, the power of the water suction pump and the power of the sewage suction pump. Compared with the prior art, the centrifugal vortex type ballast water filtering device has the advantages of effective separation of large-particle impurities, no by-product after separation, high ballasting efficiency, physical centrifugation, high automation degree, simple operation and the like.

Description

technical field [0001] The invention relates to the field of marine environmental protection, in particular to a centrifugal vortex ballast water filtering device with an adaptive cleaning function. Background technique [0002] During the voyage of a ship, ballast is an indispensable state affected by the stability of the ship and the cargo condition. When a ship is loaded with ballast water, marine organisms will enter the ballast tank along with the sea water, and will be discharged into the destination sea area after the voyage. During this process, marine organisms will be transferred from one sea area to another with ballast water, causing the spread of harmful aquatic organisms and pathogens. [0003] At present, the ballast water treatment technologies commonly used in the world mainly include three methods: physical, chemical and biological. Among them, the physical method mainly uses multi-stage filters to filter impurities in the water. However, this method is l...

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Problems solved by technology

Among them, the physical method mainly uses multi-stage filters to filter impurities in the water. However, this method is likely to cause filter blockage and reduce the flow rate of seawater in the pipeline; the chemical method mainly uses chemical substances to kill organisms in seawater, which will cause Chemical pollution; the biological method is to eliminate aquatic organisms by introducing carnivorous fish, but this method is still in theory and there is no specific practice

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