A fully open and fully closed position locking device for a mechanical valve

Abstract

The invention discloses a device for locking the fully opening position or the fully closing position of a mechanical valve. The device comprises a valve body assembly. A locking unit of the valve body assembly comprises a movable disc and a fixed disc, and opening degree positioning insertion holes are formed in the movable disc and the fixed disc. Rotating sleeves are evenly distributed on a fixed ring on the outer side of a fixed casing pipe in a sleeving mode. Each rotating sleeve is connected with a swing reed and a swing rod. An axial plug pin is arranged at the tail end of each swing reed. Each axial plug pin is mounted in the corresponding fixed axial hole and the corresponding movable axial hole in a matched mode. The fixed disc and the movable disc are arranged, the axial plug pins are evenly arranged between the fixed disc and the movable disc, and therefore a valve body can be kept stable, stress is uniform, and the service life is prolonged. According to the relation between the fixed ring and the swing rods and the relation between the fixed ring and the swing reeds, the axial plug pins can be synchronously locked or unlocked, operation is quite easy, the using effect is good, and the device is suitable for being applied and popularized.

Description

technical field [0001] The invention relates to the technical field of mechanical valve locking, and in particular relates to a mechanical valve fully open and fully closed position locking device. Background technique [0002] Conventional butterfly valves are simple in structure, small in size, light in weight, small in installation size, small in driving torque, and easy to operate. Although they are not as stable as ball valves and gate valves in terms of performance stability, they are cheap and cost-effective, so they are widely used. [0003] The working principle of the butterfly valve is to rely on the valve core to rotate 90° to realize the opening and closing of the flow channel, while the valve core is always affected by the force of the water flow. During normal use, due to hydraulic factors, coupled with mechanical factors such as vibration, the valve will automatically close. For important water supply equipment, the impact is significant, and in severe cases...

AI Technical Summary

Problems solved by technology

For important water supply equipment, the impact is significant, and in severe cases, it will cause potential accidents such as tripping

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