Low-leakage VU-shaped filler

Abstract

The utility model discloses a low-leakage VU type packing, which relates to the technical field of valve packing and comprises a valve body, a valve rod is movably arranged in the valve body, packing is movably sleeved outside the valve rod, the packing is annular, a convex block is arranged at the top of the packing, an opening is formed in the side wall of the packing in a penetrating manner, and sealing strips are fixedly arranged at two ends of the packing at the opening. The sealing strips are arranged in a staggered mode, the adjacent side walls movably abut against each other, embedding grooves are formed in the portions, at the tail ends of the sealing strips, of the filler, the sealing strips are movably arranged in the embedding grooves, the valve rod is sleeved with a bottom ring, a clamping groove is formed in the upper surface of the bottom ring, an inserting block is fixedly arranged at the bottom of the filler, and the inserting block is movably clamped in the clamping groove. The size of the packing is adjusted by adjusting the position of the sealing strip in the embedded groove, so that the packing is attached to the valve rod, low leakage is achieved, and the problems that the size of an existing VU-shaped packing cannot be flexibly adjusted according to the size of the valve rod and the size of a valve body, frequent trial and error are needed in the installation process, and efficiency is reduced are solved.

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