Self-locking positioning anti-return valve

Abstract

The invention discloses a self-locking positioning anti-return valve of the technical field of valves. The self-locking positioning anti-return valve comprises a valve body, wherein an opening and closing valve ball is rotationally connected to the middle of the valve body, and a valve rod is fixedly connected to the top of the opening and closing valve ball; a positioning ring is fixedly connected to the top of the valve body, and a positioning disc is fixedly connected to the inner wall of the positioning ring; a plurality of positioning battens are fixedly connected to the top of the positioning disc; a sliding ferrule is slidably connected to the outer wall of the valve rod, a plurality of positioning clamping needles are elastically connected to the bottom of the sliding ferrule, and a reset assembly is arranged between the valve rod and the sliding ferrule; a linkage pipeline is arranged in the middle of the valve rod, a screw rod is rotationally connected to the middle of the linkage pipeline, and the screw rod is matched with the sliding ferrule; a hand wheel is fixedly connected to the top of the valve rod, and a mounting inner chamber is formed in the middle of the hand wheel; and an unlocking assembly is elastically arranged in the middle of the mounting inner chamber. According to the self-locking positioning anti-return valve, unlocking and positioning of the valve rod is realized, return or misoperation of the opening and closing valve ball is avoided, steady flow is ensured, and the valve performance is improved; and positioning is stable and accurate, and use and adjustment are fast and simple.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a self-locking anti-return valve. Background technique [0002] Valves are widely used in all walks of life in industrial production and life. They are indispensable devices for domestic water pipelines and industrial fluid pipelines. Valves are mechanical devices that control the flow, flow direction, pressure, temperature, etc. of flowing fluid media. Devices, valves are the basic components in the piping system. Valves and fittings are technically the same as pumps, and are often discussed as a separate category. Valves can be operated manually or by handwheels, handles or pedals, and can also be controlled to change the flow of the fluid medium. Pressure, temperature and flow change, the valve is a control component in the pipeline fluid delivery system, it is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a self-locking anti-return valve to solve the problem that most of the valves proposed in the background technology do not have a self-locking function when in use, resulting in false opening or closing or valve switch back, and the flow rate cannot be accurate. Control, self-locking valve The valve structure is complex, inconvenient to use, and cannot accurately adjust and control the flow of the medium

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