1. Equipped with a pulse controller and a differential pressure gauge;

2. Needle punched felt bags, Venturi tubes, and keels;

3. There is a fence below, and the grid is made of round steel to prevent material accumulation;

4. Install large-sized maintenance doors with a width not less than 500mm;

5. Install a venting port, and the position and area of the venting port shall comply with the relevant provisions of GB/T15605;

6. Bring the lower support.