Magnetic-control explosion-proof press button

Abstract

The invention discloses a magnetic-control explosion-proof press button. The magnetic-control explosion-proof press button comprises a magnetic driving isolation chamber and a static contact connecting chamber, the magnetic driving isolation chamber is made of non-magnetic material which cannot prevent the penetration of a magnetic field, an insulation plate of the static contact connecting chamber is provided with a conducting terminal and a contact, a closed end and an opened end are arranged in the magnetic driving isolation chamber in a contraposition manner, corresponding holes of the two ends are respectively provided with a permanent magnet and a positioning spring assembly, a passive permanent magnet on the closed end is fixedly provided with an insulator and a movable contact, an initiative permanent magnet on the opened end is provided with a button head, the magnetic driving isolation chamber and the static contact connecting chamber are connected with a compression contact chamber seal element through a bolt to form a closed contact chamber, and a magnetic-control explosion-proof press button assembly is formed. The magnetic-control explosion-proof press button has the advantages that the pair of permanent magnets with the limiting springs is isolated and oppositely arranged to form the balance of the magnetic field force and the resilient force, the mechanical balance is broken through by pressing the initiative permanent magnet so as to indirectly drive the movable contact to control the connection and disconnection of the circuit, electric spark of the contact is closed and isolated, and the explosion prevention can be realized.

Description

technical field [0001] The invention relates to a circuit control operation device, more specifically, the invention provides a non-direct contact circuit conversion operation switch device for sealing and isolating dynamic sparks of circuit contacts. Background technique [0002] Most of the explosion and combustion accidents of flammable, explosive and dangerous chemicals in daily life and production are caused by the leakage of flammable and explosive media and the ignition of the mixed gas by electric sparks. The international community has higher and higher requirements for the safety prevention and control of hazardous chemical production. , the lessons of many major explosion pollution accidents have forced domestic and foreign petrochemical and other flammable, explosive and hazardous chemical industries to continuously increase the level of explosion-proof safety requirements for equipment and facilities in production, storage and transportation sites. The purpose is...

AI Technical Summary

Problems solved by technology

[0003] For example, power distribution cabinets, starter cabinets, and lighting control switches used in the production, storage and transportation of flammable and explosive hazardous chemicals must be isolated or flame-proof due to environmental requirements. At the same time, explosion-proof requirements have also brought about manufacturing costs Due to factors such as the aging of seals and assembly problems, it is difficult to absolutely block the gas from invading around the electrical contacts, which makes it difficult to completely eliminate and effectively prevent and control the hidden danger of contact sparks.

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