Electromagnetic diaphragm valve

Abstract

The invention provides an electromagnetic diaphragm valve and relates to the technical field of diaphragm valves. The electromagnetic diaphragm valve comprises a shell mechanism, an electromagnetic drive mechanism and a lead mechanism. Specifically, the shell mechanism comprises an outer shell, a middle cover, an upper cover, a lower cover and a diaphragm sandwiched between the outer shell and themiddle cover, wherein a solution cavity is formed between the middle cover and the upper cover, a liquid feeding section and a first liquid discharge section of the upper cover and a second liquid discharge section of the middle cover communicate with the solution cavity, the outer shell is provided with a tubular section, a support surface and a spin riveting surface, and the middle cover is supported by the support surface; the electromagnetic drive mechanism includes a static valve element, a movable valve element, a sealing sleeve and an elastic member; the lead mechanism includes a support seat supported by the spin riveting surface and used for supporting the lower cover; the static valve element can attract the moving valve element and drive the sealing sleeve to move downward so as to enable the liquid feeding section and the first liquid discharge section to communicate and compress the elastic member; and the elastic member can drive the movable valve element and drive the sealing sleeve to move upward, so as to enable the liquid feed section and the second liquid discharge section to communicate.

Description

technical field [0001] The invention relates to the technical field of diaphragm valves, in particular to an electromagnetic diaphragm valve. Background technique [0002] The diaphragm valve is a valve body that uses a diaphragm as an opening and closing part to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the bonnet. The electromagnetic diaphragm valve is a diaphragm valve that drives the seal to change or switch the passage through an electrical signal. [0003] Electromagnetic diaphragm valves generally include a shell mechanism and an electromagnetic drive mechanism. The electromagnetic drive mechanism has a moving valve core and a static valve core. During specific work, the static valve core can attract the moving valve core to move up and down to change or switch channels. Due to the long-term working process of the electromagnetic diaphragm valve, the movable spool will move up and down repeated...

AI Technical Summary

Problems solved by technology

Due to the long-term working process of the electromagnetic diaphragm valve, the movable spool will move up and down repeatedly, resulting in the change of the electromagnetic drive mechanism in the up and down direction relative to the shell mechanism, which will not only affect the change of the movable spool or the reliability of the switching path. performance, and even affect the airtight reliability of the electromagnetic diaphragm valve

At the same time, the electromagnetic diaphragm valve in the prior art has multiple positioning references in the positioning of the up and down direction, which greatly increases the tolerance of the electromagnetic diaphragm valve in the up and down direction, which further affects the reliability of the dynamic valve core change or switching path

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