Self-closing type discharge valve

Abstract

The invention discloses a self-closing type discharge valve, and belongs to the field of discharge valves. The self-closing type discharge valve comprises a valve body, a valve clack and a valve rod,wherein the valve clack is arranged at the lower side of a valve hole in the valve body; the lower end of the valve rod is arranged on the valve clack; the upper section of the valve rod extends out of the valve rod; a spring sleeves the valve rod; the lower end of the spring is connected onto the valve rod; the upper end of the spring is connected to the valve rod; a first connecting rod is rotatably connected on the valve rod; the upper end of the first connecting rod is rotatably connected with a second connecting rod; the second connecting rod is rotatably connected to the upper end of thevalve rod; a fixed plate is fixedly connected on the valve body; and the fixed plate is rotatably connected to a rotary shaft through a bearing. According to the self-closing type discharge valve disclosed by the invention, when a rotary disc rotates by 180 degrees, square holes formed in the rotary shaft and the fixed plate are aligned, and square columns are inserted into the square holes of the fixed plate, so that the rotary disc is clamped, long-time holding in hands is not required, and labor intensity is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of discharge valves, in particular to a self-closing discharge valve. Background technique [0002] The self-closing discharge valve is a common valve product that is installed in the fresh water and sea water pipe network of the ship. It is normally closed. Most of the valve disc is controlled by the screw, and the valve disc is driven by the spiral of the screw to open and close the valve. , Its shortcoming is, spiral lifting needs certain time, and opening and closing valve speed is slow and can't self-closing control opening action. [0003] The Chinese patent authorization number is CN205663892U, which disclosed a self-closing discharge valve on October 26, 2016, including a valve body, a valve disc, and a valve stem. The lower end of the stem is installed on the disc, the upper part of the stem sticks out of the valve body, the upper part of the stem is equipped with a spring, the upper end of the ste...

AI Technical Summary

Problems solved by technology

It solves the problem of the screw-controlled disc valve, which is slow to open and close and cannot be self-closing. It is especially suitable for emergency relief of ships, but there are still certain defects. When venting, the staff needs to lift the handle for a long time. Due to the elastic force of the spring, it is too tiring to lift for a long time

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