Flame-retarded explosion-proof valve

Abstract

The invention relates to a flame-retarded explosion-proof valve. The flame-retarded explosion-proof valve comprises a valve deck and a valve seat with a valve clack, wherein the top end of the valve deck is connected with one end of a spring, the other end of the spring is tightly pressed at the valve clack of the valve seat, the valve clack and the valve seat are sealed by a sealing ring, and a flame-retardant device is arranged between the valve seat and the valve deck. The flame retarding device comprises a flaky flame-retardant slice, an inner flame-retardant ring and a plurality of external flame-retardant rings, wherein the flame-retardant slice is arranged in installation holes in an annular cavity formed by the inner flame-retardant ring and the external flame-retardant rings, a plurality of bosses are distributed on the same surface of the flame-retardant slice, and an air path is formed a gap between every two adjacent bosses. The flame-retarded explosion-proof valve provided by the invention has the beneficial effects that concentrated airflow can be uniformly broken up into countless diffused small airflow, the airflow and flame passing distance and time are prolonged, and meanwhile, the airflow is sufficiently contacted with the wall surfaces of the flame-retardant slice, so that the pressure is finally reduced and released, the airflow temperature is lowered, and the flame is completely extinguished.

Description

technical field [0001] The invention relates to a flame-retardant explosion-proof valve, in particular to an explosion-proof valve for a crankcase of a diesel engine. Background technique [0002] When the oil mist mixture in the diesel engine crankcase reaches a certain concentration and the temperature reaches the temperature to detonate the oil mist mixture, high pressure gas and high temperature flame will be generated. When the pressure in the crankcase is higher than the rated pressure, the explosion-proof valve opens quickly, and the high-pressure gas and high-temperature flame pass through the explosion-proof valve to reduce the pressure, release the pressure, lower the temperature, and extinguish the flame. When the pressure in the crankcase is lower than the rated pressure, the explosion-proof valve is quickly closed to keep it in a sealed state, so as to prevent external fresh air from filling the crankcase and mixing with high-temperature oil mist to cause a seco...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the current explosion-proof valve has uneven pressure distribution and cannot completely extinguish the flame, a flame-retardant explosion-proof valve with uniform pressure distribution, good pressure reduction effect, high heat exchange efficiency and complete flame extinguishment is proposed.

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