Non-return stop valve

Abstract

A check stop valve, including a water inlet pipe and a water outlet pipe, and also includes a bottom vertical pipe connected to the end of the water inlet pipe and an upper vertical pipe respectively connected to the water outlet pipe and the bottom vertical pipe, and the end of the water outlet pipe is provided with a pipe connected to the bottom vertical pipe. The ladder connected to the wall; the upper end opening of the bottom vertical pipe is an oblique opening, and the side close to the water inlet pipe is higher than the side close to the water outlet pipe. The upper end of the bottom vertical pipe is provided with a baffle. When it reaches the lowest point, it is located in the ladder, and a tension spring is arranged on the blocking piece. One end of the tension spring is fixed on the blocking piece, and the other end is fixed on the wall of the standpipe. This check valve can not only prevent the backflow of fluid, but also control the start and stop of the forward flow of fluid according to actual needs, and the check effect of the check stop valve is good, and there will be no backflow of a small amount of fluid. The check stop valve has the advantages of simple structure, strong practicability, and is suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a check stop valve. Background technique [0002] Check valve refers to the valve that relies on the flow of the medium itself to automatically open and close the disc to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is a kind of automatic valve, its main function is to prevent the reverse flow of the medium, the reverse rotation of the pump and the drive motor, and the discharge of the container medium. In daily production, there are more and more types of check valves, which are widely used in various fields. However, the check valves that are commonly used now generally only play a role in preventing the medium from flowing backward, but cannot control it to block the forward flow of the fluid. In actual production, in order to facilitate the control and maintenance of the pipeline an...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the traditional check valve has a single function and cannot be manually controlled to block the forward flow of fluid, the present invention provides a check valve, which can not only prevent the fluid from flowing backward, but also control the opening and closing of the forward flow of fluid according to actual needs. stop, and the check effect of this check valve is good, and there will be no phenomenon of a small amount of fluid backflow

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