Negative-pressure-resistant polytetrafluoroethylene lining and mounting structure thereof

The utility model relates to the technical field of chemical equipment, in particular to a negative pressure resistant teflon lining and a mounting structure thereof, which comprise a negative pressure ring and a support strip, the negative pressure ring sequentially comprises a steel ring, a teflon winding steel wire mesh layer and a teflon pipe from inside to outside, the polytetrafluoroethylene pipe is sleeved outside the polytetrafluoroethylene winding steel wire mesh layer in sections; a plurality of mounting grooves are formed in the supporting strips, the transverse negative pressure rings are clamped in the mounting grooves of the vertical supporting strips, and the polytetrafluoroethylene pipes are located between every two adjacent supporting strips; the supporting strips are made of polytetrafluoroethylene materials. The negative-pressure-resistant polytetrafluoroethylene lining is mounted on the inner wall of the cylinder body; and the supporting strips avoid the pipe orifice on the cylinder body.