A flameless explosion venting device is a safety apparatus used to protect equipment and personnel. It automatically shuts down equipment or pipelines in the event of an explosion or fire, preventing the spread of flames or the escalation of an explosion. Its working principle involves detecting changes in gas pressure and temperature inside pipelines or equipment to determine whether there is a risk of explosion or fire. If a hazard is confirmed, the device immediately shuts down the equipment or pipeline while releasing pressure to achieve the goal of protecting both equipment and personnel.

Flour Mill Flameless Explosion Vent Valve (Elevator Flame Arrestor Explosion Vent) Brief Introduction:

1. It consists of two parts: an explosion vent panel and a flame extinguishing module;

2. Suitable for indoor equipment dust explosion flameless venting. High venting efficiency, economical and practical;

3. Effectively prevents flames and heat, providing a safe environment for equipment, buildings, and personnel, while also effectively collecting dust to reduce environmental pollution;

4. Combined use with an isolation valve not only effectively prevents pressure waves and flames from propagating to upstream workshop production areas but also curbs secondary explosion accidents, reducing property damage and ensuring personnel safety.

Product Parameters:

Static opening pressure: 0.01 MPa;

Frame material: Carbon steel or stainless steel;

Flame arrestor material: 304SS;

Applicable dust: St1 and St2 dust with Kst ≤ 300 barg*m/s, effective venting area meets explosion venting requirements;

Product classification: Depending on the working conditions, it can be divided into rectangular flameless explosion venting devices and curved flameless explosion venting devices;

Applicable equipment: Dust collectors, bucket elevators, drying equipment, cyclone separators, dust collectors;

Application industries: Wood processing, plastics, spraying, food and dairy products, plastic and dye processing, grain storage and processing, pharmaceuticals, coal processing, brewing, chemicals, metal processing, chemicals, power, cement, and other industries.

Flour Mill Flameless Explosion Vent Valve (Elevator Flame Arrestor Explosion Vent) Working Principle:

The flameless venting device consists of two parts—an explosion vent panel and a fire extinguishing module. The explosion vent panel responds to the rapid increase in deflagration pressure, immediately opening to reduce pressure. When the expanding fireball passes through the open vent panel, it is intercepted by the fire extinguishing module. The precision stainless steel mesh supported by a frame acts as a three-dimensional flame trap, extinguishing the flame to ensure it does not propagate, thereby preventing secondary or multiple explosions. The fire extinguishing module eliminates deflagration flames, reduces the temperature of hot gases, and captures burning and unburned dust passing through the open explosion vent panel.

At the same time, pressure waves or noise generated by production equipment are also reduced to minimal levels. When flames pass through the mesh flame arrestor element, heat exchange occurs between the element and the flame, rapidly cooling the high-temperature flame, venting pressure and smoke. Additionally, pressure waves or noise generated by production equipment are significantly reduced.

Application Fields:

Widely used in industries such as grain, metallurgy, chemicals, power, light industry, tobacco, pharmaceuticals, mechanical processing, and solid waste treatment. Applicable equipment includes cyclone separators, bag dust collectors, dust collectors, cartridge filters, pneumatic conveying systems, rod or ball mills, bucket elevators, dryers and ovens, roller grinding, buildings, etc.

With increasingly stringent environmental inspections today, safety is drawing more attention. In the past, explosion vent panels were commonly installed on dust collectors to release overpressure caused by dust explosions. However, installing such devices on indoor equipment is not permitted by safety regulations because it endangers surrounding personnel and equipment. The pressure waves and flames from an explosion may cause secondary or multiple explosions, creating risks. Therefore, relying solely on explosion vent panels for dust collectors is unreliable. We recommend using flameless explosion venting + isolation technology (a more economical solution) or explosion suppression + isolation technology to ensure production safety.

There are three main methods for dust explosion protection: venting, isolation, and suppression.

Venting: Releases explosion pressure in advance through a pressure relief device to protect equipment from damage.

Isolation: Blocks the explosion using an isolation valve to prevent flame propagation.

Suppression: Detection devices detect sparks and trigger fire extinguishing systems to instantly extinguish the flame, preventing an explosion from occurring.