A one-way anti-backflow pipeline ball valve

Abstract

The invention belongs to the field of pipeline ball valves, in particular to a one-way anti-backflow pipeline ball valve, comprising a left valve casing, a through pipe and a right valve casing, wherein a left valve body and a right valve casing are respectively provided on the inner sides of the left valve casing and the right valve casing. The right valve body, the left valve body is assembled from a first assembly shell, a second assembly shell and a main valve cylinder, the main valve cylinder is arranged on the inner side of the first assembly shell and the second assembly shell, the first assembly shell and the second assembly shell are assembled. The tops of the assembling case and the second assembling case are fixedly installed with fastening cards, and the inner sides of the fastening cards are provided with clamping rods adapted to them. The ball valve body is assembled from a first assembly shell, a second assembly shell and a main valve cylinder, wherein the first assembly shell and the second assembly shell have the same shape, which not only reduces the cost of the ball valve, but also facilitates the installation of the ball valve. In addition, when the ball valve is damaged, different components can be correspondingly replaced according to requirements, so as to avoid the high maintenance cost caused by the need to replace the entire ball valve after the existing device is damaged.

Description

technical field [0001] The invention relates to the field of pipeline ball valves, in particular to a one-way anti-backflow pipeline ball valve. Background technique [0002] The ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It can also be used for fluid regulation and control. There is a strong shear force between the valve seats, which is especially suitable for media containing fibers, tiny solid particles, etc. The ball valve is divided into pneumatic ball valve, electric ball valve and manual ball valve according to the driving method. [0003] Corresponding ball valves are generally installed in the existing pipeline to open and close the pipeline, but only one valve body is set inside the existing ball valve, which has a single structure and can only be used for opening and closing, and cannot achieve the effect of preventing backflow. In addition, the existing ball valve Generally, it...

AI Technical Summary

Problems solved by technology

[0003] Corresponding ball valves are generally installed in the existing pipelines to open and close the pipelines, but there is only one valve body inside the existing ball valves, which has a single structure and can only be used for opening and closing, and cannot achieve the effect of preventing backflow. In addition, the existing ball valves Generally, it only needs to turn 90 degrees to complete the opening and closing, but it is difficult for the existing ball valve to ensure that the valve body rotates as required during adjustment, resulting in low opening and closing efficiency and easy waste of adjustment time. In addition, the most expensive ball valve in the existing ball valve It is a spool, but the existing spool is generally an integral structure. When there is a problem with the spool, the entire spool needs to be replaced, which causes a lot of waste of resources.

Images