A flame-free explosion venting device is a safety apparatus designed to protect equipment and personnel by automatically shutting down equipment or pipelines during explosions or fires, preventing the spread of flames or expansion of explosions. Its operating principle involves detecting changes in gas pressure and temperature inside pipelines or equipment to determine the risk of explosion or fire. If a hazard is confirmed, it immediately closes the equipment or pipeline while releasing pressure to achieve the goal of safeguarding both equipment and personnel.

Dust Removal Pressure Relief 304 Stainless Steel Flame-Free Explosion VentBrief Introduction:

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

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

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

4. Combined use with isolation valves not only prevents pressure waves and flames from propagating to upstream workshop production areas but also suppresses secondary explosions, reducing property damage and ensuring personnel safety.

Product Parameters:

Static activation pressure: 0.01 MPa;

Frame material: Carbon steel or stainless steel;

Flame arrestor material: 304 SS;

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

Product classification: Based on usage conditions, it can be divided into rectangular flame-free explosion venting devices and curved flame-free explosion venting devices;

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

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

Dust Removal Pressure Relief 304 Stainless Steel Flame-Free Explosion VentWorking Principle:

The flame-free venting device consists of two parts—an explosion vent panel and a fire extinguishing module. The explosion vent panel responds rapidly to rising deflagration pressure, opening immediately to reduce pressure. When the expanding fireball passes through the open vent panel, it is intercepted by the extinguishing module. The frame-supported precision stainless steel mesh acts as a three-dimensional flame trap, extinguishing the flame to prevent propagation, thereby avoiding secondary or multiple explosions. The extinguishing module eliminates deflagration flames, reduces the temperature of hot gases, and captures both burning and unburned dust passing through the open vent panel.

Simultaneously, pressure waves or noise generated by production equipment are minimized. As flames pass through the mesh flame arrestor, heat exchange occurs with the flame arrestor, rapidly cooling the high-temperature flame, venting pressure and smoke, while also reducing pressure waves or noise from production equipment.

Application Fields:

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

With increasingly stringent environmental inspections, safety is gaining more attention. In the past, explosion vent panels were commonly installed on dust collectors to release overpressure caused by dust explosions. However, such installations on indoor equipment are not permitted by safety regulations because they endanger surrounding personnel and equipment. The pressure waves and flames from explosions may cause secondary or multiple explosions, creating risks. Therefore, relying solely on explosion vent panels for dust collectors is unreliable. We recommend using flame-free 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 explosions using isolation valves to prevent flame propagation.

Suppression: Detection devices identify sparks and trigger fire suppression systems to instantly extinguish flames, preventing explosions.