Bi-directional two stage composite filter structure

A filter and secondary technology, applied in the fields of filtration and separation, filtration circuits, chemical instruments and methods, etc., can solve the problems of complex components, insufficient automation of the double lubricating oil filter, and membrane blockage, etc., and achieve significant economic benefits and Social benefits, significant filtering effect, and the effect of improving stability

Inactive Publication Date: 2008-04-23
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0002] According to the new resolution of MPEC.107(49) passed by the International Maritime Environment Protection Committee of the International Maritime Organization, it is stipulated that the ships under construction must be equipped with a new type of oil-water separator with an oil discharge of no more than 15PPM oily mixture. When we develop oil-water separators that meet the new regulations It was found that when the membrane separation was performed on the emulsion after most of the oil slick was removed through mechanical separation, because the composition of the emulsion entering the membrane was complex and contained more large-diameter particles, such as ferroferric oxide and other substances, Such substances directly entering the membrane will seriously affect the performance and life of the membrane, causing the membrane to quickly clog or even fail, and the membrane module has to be replaced frequently, making system maintenance difficult and the

Method used

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  • Bi-directional two stage composite filter structure
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[0009] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0010] As shown in Figure 1 and Figure 2, the present invention includes a bottom plate 1, A two-position three-way solenoid valve 2, B two-position three-way solenoid valve 3, A two-stage combined filter 4, B two-stage combined filter 5, and a differential pressure sensor 6. Control unit 7. Among them, the A secondary combined filter 4 and the B secondary combined filter 5 adopt two self-designed oil filters in series and cast into an integrated structure. The accuracy of the two oil filters has been optimally matched under test verification, and the A secondary combined filter The filter 4 and the B-stage combined filter 5 are fixedly connected to the bottom plate 1. The a port of the A two-position three-way solenoid valve 2 is connected with the mechanically separated outlet, the b port and the c port are respectively connected to the inl...

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Abstract

The present invention relates to a double-direction two-stage composite filter mechanism, belonging to the field of environment-protecting technology. Said invention includes bottom plate, two two-position three-way electromagnetic valves, two groups of two-stage composite filters, pressure difference sensor and control unit. Said invention adopts unique two-stage composite filter integrated optimized design to make filtering accuracy of two filtering elements obtain optimum matching and obvious filtering effect, and can prolong the service life of said filtering element. At the same time, said invention adopts PLC to receive the signal of pressure difference sensor to automatically control two-position three-way electromagnetic valves so as to implement that when one worked one-way two-stage composite filter is blocked, another one-way two-stage composite filter can be used so as to raise the stability of system.

Description

technical field [0001] The invention relates to a filter mechanism, in particular to a two-way two-stage combination filter mechanism used for pre-filtration in a membrane separation device of a ship's oil-water separator. It belongs to the technical field of environmental protection. Background technique [0002] According to the new resolution of MPEC.107(49) passed by the International Maritime Environment Protection Committee of the International Maritime Organization, it is stipulated that the ships under construction must be equipped with a new type of oil-water separator with an oil discharge of no more than 15PPM oily mixture. When we develop oil-water separators that meet the new regulations It was found that when the membrane separation was performed on the emulsion after most of the oil slick was removed through mechanical separation, because the composition of the emulsion entering the membrane was complex and contained more large-diameter particles, such as ferr...

Claims

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Application Information

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IPC IPC(8): B01D35/12B01D36/00B01D63/00
Inventor 巢峰周晓洁韩小波徐筱欣
Owner SHANGHAI JIAO TONG UNIV
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