An air circuit control system for a spherical air lock valve

Abstract

The invention discloses a pneumatic control system of a spherical air lock valve. The pneumatic control system of the spherical air lock valve comprises an air cylinder, an air pocket and an electromagnetic valve. An air inlet of the electromagnetic valve is communicated with the air pocket through a pipeline. Two air outlets of the electromagnetic valve are respectively communicated with a closing air port and an opening air port of the air cylinder through pipelines. The air outlet of the electromagnetic valve connected with the closing air port of the air cylinder is connected with a branch pipeline and communicated with a sealing ring of the air lock valve. A pilot valve is arranged on a pipeline between the opening air port of the air cylinder and the air outlets of the electromagnetic valve. A control air port of the pilot valve is communicated with the sealing ring of the air lock valve. The branch pipeline is connected with a mechanical control valve which is driven and moved by a valve core of the air lock valve. The pneumatic control system of the spherical air lock valve has the advantages that the pneumatic control system is novel, the capacity of accident resistance is strong, sealing of the valve can be effectively ensured under the condition of accidental power loss and air loss, the purpose of zero leakage is achieved and therefore using environment can be safe, and toxic gas leakage is avoided.

Description

technical field [0001] The invention relates to an air path control system in a pneumatic conveying system, in particular to a spherical air lock valve air path control system used in the fields of electric power, metallurgy, chemical industry, food, and pharmacy. Background technique [0002] The main components of the spherical air-lock valve include valve body, valve core, sealing ring, cylinder, etc. Usually, the spherical air-lock valve is equipped with a double-position travel switch. During pneumatic control, the sealing ring releases pressure and deflates before the valve is opened, and then Rely on its own elastic retraction, then the cylinder moves after a few seconds delay, and the hemisphere rotates 90° to the open position; when the valve is closed, the valve core rotates 90° to the closed position, and the closing travel switch sends out a signal, indicating that the valve body is in place, and then seals The air in the ring is elastically deformed, so that it ...

AI Technical Summary

Problems solved by technology

[0003] The traditional spherical air lock valve cannot guarantee the sealing performance of the valve in unexpected situations such as power failure and air loss, and the safety of use cannot be guaranteed

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