A flame-retardant explosion-proof valve

Abstract

The invention discloses an inflaming retarding type anti-explosion valve. The inflaming retarding type anti-explosion valve comprises a valve seat and a valve cover which is fixedly arranged on the valve seat. An inflaming retarding device is arranged between the valve seat and the valve cover. The inflaming retarding device comprises an inner flow guiding ring which is arranged inside the valve seat and an outer flow guiding ring which is arranged on the edge of the valve seat, and the surface of the inner flow guiding ring and the surface of the outer flow guiding ring are each provided with guide holes. A set of inflaming retarding rings are arranged between the inner flow guiding ring and the outer flow guiding ring. The bottom of the valve seat is provided with a valve clack, the valve clack is provided with a spring, one end of the spring presses the valve clack tightly, and the other end of the spring abuts against the valve cover. The inflaming retarding type anti-explosion valve has the beneficial effects that the anti-explosion valve can increase the paths through which gas flow and flame pass and prolong the time when the gas flow and the flame pass through multiple times of diversion, extruding and other repeating process on concentrated gas flow, meanwhile, the gas flow makes sufficient contact and exchange heat with all ring faces of the inflaming retarding rings, finally, the pressure is reduced and released, the gas flow temperature is reduced, and the flame is completely extinguished.

Description

technical field [0001] The invention relates to the technical field of explosion-proof valves, in particular to a flame-retardant explosion-proof valve. Background technique [0002] When the oil mist mixture in the crankcase of the internal combustion engine reaches a certain concentration and the temperature reaches the temperature of detonating 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, reduce 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 maintain a sealed state to prevent external fresh air from filling the crankcase and mixing with high-temperature oil mist to cause second...

AI Technical Summary

Problems solved by technology

The upper and lower penetration of the flame retardant sheet will easily cause high temperature and high pressure airflow to the upper part of the explosion-proof valve, resulting in excessive load on the upper part of the explosion-proof valve, which is not conducive to pressure reduction and flame extinguishing

The flame retardant sheet is perpendicular to the valve seat and arranged radially along the annular cavity. Once the height of the flame retardant sheet is too high or the installation is not firm enough, when the high-pressure airflow hits the flame retardant sheet, it is easy to cause deformation of the flame retardant sheet or the flame retardant

The concave and convex points on the flame retardant sheet, because there is no clear staggered arrangement, easily cause the airflow to flow to the closer channel, resulting in the accumulation of airflow and pressure increase in the local channel

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