Packing ring

The utility model relates to a packing ring and belongs to the technical field of ceramic packing. The packing ring comprises a three-dimensional ring surface with an upper opening and a lower opening, and an internal-extending tongue sheet, wherein a window is formed in the three-dimensional ring surface, the three-dimensional ring surface is a spherical surface, and the window is a circular window. By adopting a spheroidal structure, the packing ring is higher in pressing capacity, and is capable of solving the technical problem that a packing made of ceramics has a breaking danger or necessarily has a relatively high material thickness, which possibly causes high total weight of a packing bulk accumulated material and causes high pressure loss in a separation column. The internal-extending tongue sheet is arranged in a dimensional space with a common datum plane in a deflecting manner, so that the packing ring has the advantage of large circulating amount which is increased by above 60 percent in compariso