Small-caliber three-eccentric center butterfly valve

Abstract

The invention discloses a small-diameter triple-eccentric butterfly valve, which includes a valve body, a round hole is opened in the middle of the valve body, a circle of chute is opened on the inner wall of the round hole, and a butterfly plate is arranged in the round hole. , the periphery of the butterfly plate is provided with a plurality of fixed grooves, and the fixed grooves are respectively provided with a sliding ball and a pressure bearing plate, wherein the pressure bearing plate is located on the side of the sliding ball close to the butterfly plate, and the sliding ball and the chute The inner wall is slidingly connected, and the side of the pressure bearing plate away from the sliding ball is welded with multiple parallel elastic rods, and the inner wall of the fixing groove is also welded with multiple parallel support rods, and the support rods correspond to the elastic rods. A card slot is provided on one side close to the elastic rod, a spring is fixedly connected to the inner wall of the card slot, and the spring is connected to the elastic rod, and the top of the valve body is respectively provided with a first fixed block and a second fixed block. The invention has reasonable design and convenient adjustment, and effectively improves the use quality and sealing effect of the small-diameter triple-eccentric butterfly valve.

Description

technical field [0001] The invention relates to the technical field of triple-eccentric butterfly valves, in particular to a small-diameter triple-eccentric butterfly valve. Background technique [0002] The shaft center of the valve stem deviates from the center of the disc and the center of the body at the same time, and the butterfly valve whose sealing pair is inclined cone becomes a triple eccentric butterfly valve. Triple eccentric butterfly valves are widely used in metallurgy, electric power, petrochemical, water supply and drainage, and municipal construction industrial pipelines where the medium temperature is less than or equal to 425°C, for regulating flow and carrying and breaking fluid. Most of the existing triple-eccentric butterfly valves used for small diameters have complex internal structures, relatively simple performance, and low flexibility. During use, they are easily affected by the pressure of water flow and cause the position of the butterfly plate ...

AI Technical Summary

Problems solved by technology

Most of the existing triple-eccentric butterfly valves used for small diameters have complex internal structures, relatively simple performance, and low flexibility. During use, they are easily affected by the pressure of water flow and cause the position of the butterfly plate to shift, which in turn affects the sealing effect. There are certain limitations

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