Pilot type fire-fighting electromagnetic valve

Abstract

The invention discloses a pilot type fire-fighting electromagnetic valve which comprises an electronic valve controller outer shell. An electromagnetic valve body is arranged below the electronic valve controller outer shell, and a movable iron core piston is arranged in the middle of the interior of the electronic valve controller outer shell. A movable iron core is arranged on the movable iron core piston. A piston lower supporting column is arranged under the movable iron core piston. Inductive coils are arranged on the two sides of the movable iron core piston. According to the pilot type fire-fighting electromagnetic valve, a structure combining the direct stepped mode with the pilot mode is adopted, and the phenomenon that the valve cannot be opened due to pressure difference is avoided. Parts and components, such as a valve deck and main and auxiliary valve elements, in contact with media are plastic products which are made of special materials through a special technique, failures such as rust and jamming caused by materials are completely eradicated, and the effect that the valve can be opened normally even though the valve is not used for years is guaranteed. By the adoption of the special technique, the movable iron core component space is completely isolated from the media, and rusting is prevented.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic valves, and in particular relates to a pilot-operated fire-fighting electromagnetic valve. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, and speed regulating valves. There is a closed cavity in the solenoid valve, and there are through h...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pilot-operated fire-fighting solenoid valve to solve the problem that the traditional solenoid valve in the fire-fighting field proposed in the above-mentioned background technology is not used all the year round, and the internal valve body structure will rust. Once a fire breaks out, it cannot be guaranteed to be normal quickly. The opening condition is not a structural problem of combining step-by-step and pilot-operated

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