| 摘要 |
The proposed filter comprises the following: Outer and inner cylinders (1,2), made of thermoplastic material. Circular bottom plate (3) and top plate (4), which is provided with a circular opening. Main filter element (5) of paper, located between the outer and inner cylinders, and two auxiliary filter elements (6,7), of non-woven material, located on the outer surfaces of the thermoplastic cylinders. |
