Valve core component of automatic control valve

Abstract

The invention discloses a valve core component of an automatic control valve, and relates to a valve component. The valve core component consists of a valve seat, a ring wall, a valve plate, a connection rod and a bottom cover, wherein the valve seat is arranged in the inner cavity of the valve body and adopts a rotating body structure; the lower end opening of the valve seat forms a sealing surface; an upper valve cavity is formed in the inner space of the valve seat and is communicated to a fluid output connection opening; the ring wall is arranged below the valve seat; the upper end opening of the ring wall surrounds the periphery of the lower part of the valve seat; a flow guide opening is formed in a space between the ring wall and the valve seat; a lower valve cavity is formed in the inner space of the ring wall; a fluid input connection opening is communicated to the lower valve cavity through the flow guide opening; the valve plate is arranged in the lower valve cavity and is positioned below the flow guide opening; a sealing corresponding surface matched with the sealing surface on the valve seat is arranged on the upper end face of the valve plate. The valve is switched on by down flow of a fluid medium and is switched off by down pressure of the fluid medium, so that the valve core component can save electric energy, works reliably and is long in service life.

Description

technical field [0001] The invention relates to a valve for automatically controlling fluid, in particular to a valve part. Background technique [0002] Automatic control valves include solenoid valves, automatic liquid level control valves, etc. Automatic control valves are widely used in household appliances, textiles, light industry, petroleum, chemical and urban construction industries as actuators for automatic control of fluid media. When the current automatic control valve is closed, the valve core is closed against the flow direction or pressure direction of the fluid medium, and the pressure action direction of the fluid medium is opposite to the closing direction of the valve core. After the valve is closed, the valve core needs to resist the fluid The pressure of the medium, therefore, is prone to failures due to poor closure and leakage, resulting in unreliable work that affects the normal operation of the equipment, short service life and waste of resources, an...

AI Technical Summary

Problems solved by technology

When the current automatic control valve is closed, the valve core is closed against the flow direction or pressure direction of the fluid medium, and the pressure action direction of the fluid medium is opposite to the closing direction of the valve core. After the valve is closed, the valve core needs to resist the fluid The pressure of the medium, therefore, is prone to failures due to poor closure and leakage, resulting in unreliable work that affects the normal operation of the equipment, short service life and waste of resources, and affects safety

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