Novel ball valve

Abstract

The invention discloses a novel ball valve. The novel ball valve comprises a valve body; the valve body is internally provided with a passage and a mounting hole; the upper end, in the mounting hole,of the valve body is provided with an upper end cover, and the lower end is provided with a lower end cover; a lower rotating shaft is rotationally connected inside the lower end cover; the upper endof the lower rotating shaft inside the mounting hole is rotationally connected with a lower valve ball; a loop bar is rotationally connected inside the upper end cover; the lower end of the loop bar is provided with a ball cover; the two ends of the passage are each fixedly provided with a screw barrel; a valve seat cylinder is slidably connected inside the screw barrel; the outer side of the valve seat cylinder is provided with a protruding shoulder; a spring is arranged between the screw barrel and the protruding shoulder; a first transmission component is arranged inside the mounting hole;the lower valve ball is internally provided with a mounting groove; the inside of each mounting groove is rotationally connected with an axle rod; each axle rod is fixedly provided with a ball core; the inside of the loop bar is rotationally connected with a regulating rod; and a second transmission component is arranged inside the lower valve ball. The novel ball valve is simple in structure andcan realize on-line replacement of a sealing surface of the ball core without shutdown.

Description

technical field [0001] The invention belongs to the technical field of pipeline valves, in particular to a novel ball valve. Background technique [0002] Pipelines are usually used to transport media in industrial or civil infrastructure, where the pipeline is regulated due to changes in pressure or temperature. In order to adjust the flow, an adjustment mechanism, especially a ball valve, is used in the pipeline to ensure the best work. conditions and the safety of the environment. Ball valves usually use a sphere with a circular passage as the opening and closing element, and the sphere realizes the opening and closing action with the rotation of the valve body. The opening and closing part of the ball valve is a ball with a through hole, which rotates around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. A traditional ball valve is usually a sphere with a through hole installed on the valve seat, and the opening ...

AI Technical Summary

Problems solved by technology

[0003] (1) In order to ensure that no internal leakage occurs in the existing ball valve, the ball, that is, the closing part, must be pressed tightly on the valve seat during installation. The torque is large when opening and closing. Friction, serious wear, easy to cause leakage, reduce the working reliability of the ball valve, and shorten the service life of the ball valve; however, the sealing surface of the existing ball valve ball is fixed, when the sealing surface of the valve ball is damaged, the entire pipeline needs to be stopped Or equipment, remove the entire ball valve to repair or replace the valve ball, affecting production efficiency, and many working conditions do not allow the equipment to shut down, once shut down will cause major economic losses;

[0004] (2) The ball valve of the prior art cannot achieve throttling and flow control. In order to adjust the flow in the pipeline, it is also necessary to add a flow regulating valve in the pipeline, which increases the configuration cost of the pipeline

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