Film filter

Abstract

The membrane filter, which may be regenerated while filtering or intermittently, includes raw liquid tank, raw liquid pump, membrane assembly and purified liquid tank. The raw liquid tank is connected via the raw liquid pump to the inlet of the membrane assembly, and there are ball adding trough connected to the inlet of the membrane assembly and ball-liquid separator connected to the output of the membrane assembly, and the ball-liquid separator has one end connected to the ball adding trough via a ball conveying pump and the other end connected to the raw liquid tank. Compared with available technology, the present invention has raised filtering capacity, lowered power consumption, prolonged filtering period and service life of the membrane assembly and lowered use cost.

Description

1. Technical field [0001] The invention relates to a filter device, in particular to a membrane filter device. 2. Background technology [0002] Membrane filtration has been researched and used for many years, and there are many institutions or enterprises engaged in the research and production of membrane filtration elements, as well as manufacturing enterprises that use the combination of these elements to produce membrane filters. The technology of membrane filter elements has developed rapidly, and the price of membrane filter elements has also been greatly reduced. Maximize the filtration capacity, prolong the continuous working time and service life of the membrane filter element, so that the use cost of the user cannot be reduced, and the application range of the membrane filter cannot be further expanded. The reason for the above problems is mainly that the prior art has not made a technical breakthrough in the regeneration of membrane elements. [0003] Most membr...

AI Technical Summary

Problems solved by technology

[0006] 1. Part of the clean liquid is used as the backwashing liquid, and this part of the liquid needs to be filtered again, thereby reducing the processing capacity of the whole machine and increasing energy consumption; if other liquids are used as the backwashing liquid, either the Empty the liquid in the membrane module, or mix the liquid backwash liquid in the membrane module, resulting in waste of materials; after the backwash liquid operation is completed, the liquid in the membrane module must also be drained before the next cycle of filtration operation, which reduces the effective working time and reduces the efficiency of the whole machine;

[0007] 2. In a filtration cycle, the solid-phase impurities attached to the filter surface are gradually compacted, and some of them are squeezed into the filter pores, which cannot be completely recoiled, and the filtration capacity of the membrane module decreases accordingly. As the number of micropores that lose their filtering effect increases, these filtering micropores will be completely blocked, losing their filtering effect, and the entire membrane element will eventually be scrapped;

[0009] In short, the backwash regeneration method of membrane filtration reduces the working efficiency of membrane modules, increases energy consumption, reduces the life of membrane modules, and limits the scope of use of membrane filtration.

There are many materials that must be filtered by membrane to improve the filtration accuracy. Due to the large amount of impurities and the short life of membrane elements, membrane filtration cannot be used directly, which greatly limits the application of membrane filtration.

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