Explosion-proof lamp

Abstract

An explosion-proof lamp comprises a transparent piece with a hanging flange at the open end, a metal pressing ring, a shell with inner explosive-proof threads arranged on the inner wall of the open end, and a sealing ring sleeved with a sealing groove. The metal pressing ring comprises a first open end and a second open end opposite to the first open end, outer explosive-proof threads and the sealing groove are arranged on outer wall of the metal pressing ring, the outer explosive-proof threads are close to the first open end, the thread forms of the outer explosive-proof threads are isosceles trapezoid, and the sealing groove is close to the second open end and surrounds the metal pressing ring by a circle. A blocking boss is arranged on the inner wall of the metal pressing ring, is close to the second open end, and surrounds the inner wall of the metal pressing ring by a circle. The hanging flange is accommodated in the metal pressing ring from the other end of the metal pressing ring, and the bottom face of the hanging flange abuts against the blocking boss. The thread forms of the inner explosive-proof threads are isosceles trapezoid, and the inner explosive-proof threads are meshed with the outer explosive-proof threads. The explosion-proof lamp is good in airtightness, and convenient to disassemble.

Description

【Technical field】 [0001] The invention relates to a lighting fixture, in particular to an explosion-proof lighting fixture. 【Background technique】 [0002] With the large number of applications of explosion-proof lamps in China, the market is becoming more and more extensive. Many lamps are used outdoors. Since there is no structural waterproof and dustproof design, they only rely on sealing rings for protection. The accumulation at the explosion-proof joint surface makes the sealing ring rapidly aging and invalid, and the explosion-proof joint surface is corroded and destroyed, and the safety and reliability are out of the question, causing safety hazards. In addition, many lamps use ordinary triangular thread as the thread flameproof joint surface. When it is slightly corroded, the top of the triangular thread is pointed, and it is easy to become brittle and fall off. When the lamp needs to be opened for maintenance, due to the top of the thread The parts fall off and cau...

AI Technical Summary

Problems solved by technology

[0002] With the large number of applications of explosion-proof lamps in China, the market is becoming more and more extensive. Many lamps are used outdoors. Since there is no structural waterproof and dustproof design, they only rely on sealing rings for protection. Gathering at the explosion-proof joint surface makes the sealing ring rapidly aging and invalid, and the explosion-proof joint surface is corroded and destroyed, safety and reliability are out of the question, causing safety hazards

In addition, many lamps use ordinary triangular thread as the thread flameproof joint surface. When it is slightly corroded, the top of the triangular thread is pointed, and it is easy to become brittle and fall off. When the lamp needs to be opened for maintenance, due to the top of the thread Parts fall off and cause the thread to be stuck, so that the cover cannot be opened, which brings a lot of difficulties to maintenance

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