Positioning structure of security filter element

The utility model discloses a positioning structure of a security filter element. The positioning structure comprises a tank body, a lower hole plate (4) arranged on the lower part of the tank body and a plurality of filter elements (1) vertically arranged in the tank body, wherein the lower hole plate (4) is provided with a plurality of installing holes (5), one ends of the filter elements (1) are fixedly arranged in the installing holes (5), angle steels (3) are welded in the installing holes (5), and inner angles of the angle steels (3) are 90 degree. The angle steels are welded in the filter element installing holes of the lower hole plate of the security filter element, so that the filter elements can be rapidly fixed, and the production and installation efficiency is improved; the angle steels are made of a stainless steel material which is resistant to corrosive media such as air, steam and water, and are used for water treatment production, so that the cleaning process in production is omitted, and the service life of equipment is prolonged; by virtue of arranging chamfers on the angle steels, the assembly is easier, and the filter element installation efficiency is improved; rubber pads are additionally arranged on the outer sides of the angle steels, so that effects of fixing the filter element and sealing are achieved.