A Gravity Assisted Opening Ball Valve

Abstract

The object of the present invention is to provide a gravity-assisted opening ball valve, which can be assisted to open by means of the gravity of the ball valve core itself, and the movable valve seat structure is redesigned in conjunction with the ball valve core, so as to realize the convenient opening of the ball valve core and ensure sufficient sealing performance, including The valve body and the sphere, the valve body is provided with an inflow channel, an outflow channel and a valve cavity, and the ball is provided with an overflow channel and is rotatably arranged in the valve cavity to control the flow of the valve body inflow channel and outflow channel. The valve body is provided with a valve seat at the junction of the valve body inflow channel and outflow channel and the valve cavity. The valve seat cooperates with the ball to realize the sealing of the ball valve in the closed state. The upper part of the valve body is provided with a valve cover. The cover seals the sphere in the valve cavity, the upper end of the sphere is connected to the upper valve stem, and the lower end of the sphere is connected to the lower valve stem. Thread out and attach to the handle.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a gravity-assisted opening ball valve. Background technique [0002] The difficulty of opening industrial valves is one of the problems that have plagued the field of valves for a long time. Valves control industrial pipelines and play important roles in raw material transportation, reaction cutoff, and pressure control. The force will tightly press the closed valve on the valve seat. Although it is helpful to achieve sealing, the corresponding friction between the valve core and the valve seat will also be greatly increased, making it difficult for all types of valves to open. . Especially for large-scale valves, such as ball valves that control large-diameter and high-flow pipelines, due to the large volume of the valve itself, the weight of the ball valve core is also large, and the force surface of the liquid pressure is also large, making it more difficult to ope...

AI Technical Summary

Problems solved by technology

[0002] The difficulty of opening industrial valves is one of the problems that have plagued the field of valves for a long time. Valves control industrial pipelines and play important roles in raw material transportation, reaction cutoff, and pressure control. The force will tightly press the closed valve on the valve seat. Although it is helpful to achieve sealing, the corresponding friction between the valve core and the valve seat will also be greatly increased, making it difficult for all types of valves to open.

Especially for large-scale valves, such as ball valves that control large-diameter and high-flow pipelines, due to the large volume of the valve itself, the weight of the ball valve core is also large, and the force surface of the liquid pressure is also large, making it more difficult to open large ball valves.

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