Low-pressure cross-flow type filtering device, system and method

Abstract

The invention belongs to the field of filters, and discloses a low-pressure cross-flow type filtering device, system and method. The low-pressure cross-flow type filtering device comprises a main cylinder, a first end socket, a second end socket, a PTFE integrated structure filter element and a pressure measuring device; the two ends of the main cylinder are connected with the first end socket andthe second end socket respectively, a liquid inlet is formed in the end, away from the main cylinder, of the first end socket, a slag outlet is formed in the end, away from the main cylinder, of thesecond end socket, and a clear liquid outlet is formed in the side wall of the main cylinder. The PTFE integrated structure filter element is arranged in the main cylinder body, one end of the PTFE integrated structure filter element is located between the main cylinder body and the first end socket, and the other end of the PTFE integrated structure filter element is located between the main cylinder body and the second end socket; the pressure measuring device is connected with the side wall of the main cylinder, and one end extends into the main cylinder. Low-pressure cross-flow type filtration is achieved through the PTFE integrated structure filter element, the surface film is adopted for filtration, the filtration pressure is low, then the power consumption and the maintenance cost are low, and the whole filtration device is simple in structure, low in machining cost and easy to disassemble and replace.

Description

technical field [0001] The invention belongs to the field of filters, and relates to a low-pressure cross-flow filter device, system and method. Background technique [0002] At present, in the industrial field, microfiltration technology generally uses a filter membrane with surface filtration performance for filtration, which can make all solid particles and suspended solids in the liquid be trapped on the surface of the filter membrane, and is currently one of the most effective solid-liquid separation devices. [0003] Membrane filtration technology is divided into dead-end filtration and cross-flow filtration, see figure 1 with 2 , cross-flow filtration is that the feed liquid flows parallel to the membrane surface under the push of the pump. The difference from dead-end filtration is that the shear force generated when the feed liquid flows through the membrane surface takes away the particles retained on the membrane surface, thereby making the pollution The layer i...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of high processing cost of the internal filter cross-flow device in the prior art, and the high filtration pressure leads to high power consumption and high maintenance costs, and provides a low-pressure cross-flow filter device, system and method

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