Filter development history

In World War II, in order to meet the need of hydraulic oil filtration of B- 17 bomber, the British invented the laminated filter for Boeing Company and obtained the patent. The original laminations were made of stainless steel and copper. Grooves are machined on both sides of the laminations, and a group of laminations are stacked to form a hollow cylinder, thereby forming a filter element.

In the 1960s, an Israeli company obtained this patent and began to produce laminated filters to protect the irrigation system. In order to reduce costs and facilitate on-site maintenance, they began to use plastic laminates. In this way, a wartime aviation filter was transformed into an irrigation filter and applied all over the world.

Nowadays, after nearly 30 years of application in irrigation, with the progress of science and technology and the development and production of various new materials and control technologies, laminated filters have been widely used in municipal and civil wastewater treatment, industrial wastewater treatment, textile mills, steel mills, food processing, industrial water cooling, industrial water treatment, seawater desalination and other manufacturing and processing industries.

The filtration accuracy of the laminated filter can be selected from various specifications such as 20 microns, 55 microns, 100 microns, 130 microns, 200 microns, 400 microns, etc. The hourly flow of a single filtration system can reach thousands of cubic meters. The control system can be fully automated, and the backwashing time of a single unit is only ten seconds, which hardly affects the water output of the system. In addition, its backwashing water is very small, the filtration is accurate and reliable, and the modular combination is easy to expand, which makes the laminated filter show unlimited development space more and more.