Easily-cut framework with steps in middle

The utility model relates to an easy-to-cut framework with a step in the middle. According to an existing conventional filter element framework, only step structures are welded to the two ends of the framework, and the structures are suitable for being matched with filter elements with standard sizes. However, when a non-standard-size filter element is manufactured, a plurality of frameworks need to be cut, and after the frameworks are cut off, the problems that an end cover is not easy to weld, the product appearance is poor, and the qualified rate of degerming-grade products is low exist. The framework comprises a framework body, steps are welded to the two ends of the framework body, and the framework is characterized in that a plurality of middle steps are evenly arranged on the outer side face of the framework and located between the steps at the two ends, and a cutting groove is formed in each middle step. According to the utility model, the framework still has a welding step after being cut off, the we