Bidirectional non-return plastic valve

Abstract

The invention relates to the technical field of plastic valves, and particularly relates to a bidirectional non-return plastic valve. The bidirectional non-return plastic valve comprises a valve body,wherein a shell is arranged at the upper end of the valve body; a filtering cavity is formed in the lower end of the valve body; a main hand wheel is arranged in the middle of the upper end of the shell; a first auxiliary hand wheel and a second auxiliary hand wheel are correspondingly arranged at the two ends of the shell and positioned on the two sides of the main hand wheel; an adjusting handwheel is arranged at the joint of the middle of one side of the valve body and the filtering cavity; a first auxiliary gear is arranged at the position, corresponding to the first auxiliary hand wheel, in the shell; and a main gear is arranged at the position, corresponding to the main hand wheel, in the shell. According to the bidirectional non-return plastic valve, bidirectional synchronous non-return of the valve is realized, the purpose of rapid closure is achieved, and the problem that the opening and closing of the valve are influenced due to the fact that the opening and closing hand wheel of the valve is prone to damage during long-term use is solved; and the valve body is provided with a controllable water filtering treatment function, so that the water quality in a pipeline is improved, and the valve not only realizes the bidirectional non-return function, but also has the water filtering effect.

Description

technical field [0001] The invention relates to a relatively large scope, in particular to a two-way backstop plastic valve. Background technique [0002] Valves are the control components in the fluid delivery system. They have the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valve to extremely complex The various valves used in the automatic control system have a wide variety of varieties and specifications. The valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. . Valves are also divided into cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, dual-phase steel valves, plastic valves, non-standard custom-made valves, ...

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Problems solved by technology

[0003] At present, most of the plastic valves on the market only intercept the water in the pipeline in one direction. During the long-term use of the plastic valve, opening and closing many times will easily reduce the effect of the valve plate on the water interception in the pipeline, resulting in water seepage. phenomenon, and the valves on the market only play a simple interception role, and cannot intercept the impurities in the water quality during application. Therefore, those skilled in the art provide a two-way backstop plastic valve to solve the above-mentioned background technology. proposed question

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