Pulse dust removal equipment dust collector explosion venting device

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 escalation of explosions. Its operational principle involves detecting changes in gas pressure and temperature inside pipelines or equipment to assess the risk of explosion or fire. If a hazard is confirmed, the device immediately closes the equipment or pipeline while releasing pressure to safeguard both machinery and personnel.

Pulse Dust Removal Equipment Dust Collector Explosion Venting DeviceBrief Introduction:

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

2. Suitable for indoor equipment dust explosion flame-free venting, offering high venting efficiency, cost-effectiveness, and practicality;

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 explosion isolation valves not only prevents pressure waves and flames from propagating to upstream workshop production areas but also curbs secondary explosions, minimizing property damage and ensuring personnel safety.

Product Parameters:

Static opening pressure: 0.01MPa;

Frame material: Carbon steel or stainless steel;

Flame arrestor material: 304SS;

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

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

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

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 more.

Pulse Dust Removal Equipment Dust Collector Explosion Venting DeviceWorking Principle:

The flame-free venting device comprises two parts—an explosion-proof panel and a fire extinguishing module. The explosion-proof panel responds rapidly to rising deflagration pressure, opening immediately to reduce pressure. When the expanding fireball passes through the open explosion-proof panel, it is intercepted by the fire extinguishing module. The stainless steel precision mesh, supported by a frame, acts as a three-dimensional flame trap, extinguishing the flame to prevent propagation and avoid secondary or multiple explosions. The fire extinguishing module eliminates deflagration flames, reduces hot gas temperature, and captures both burning and unburned dust passing through the open explosion-proof 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 conveying systems, rod or ball mills, bucket elevators, dryers and ovens, roller grinding, buildings, etc.

With increasingly stringent environmental inspections, safety is gaining more attention. In the past, explosion venting panels were commonly installed on dust collectors to release overpressure caused by dust explosions. However, installing such devices indoors is not permitted by safety regulations because it endangers surrounding personnel and equipment. The pressure waves and flames from explosions could trigger secondary or multiple explosions, posing risks. Therefore, relying solely on explosion-proof panels for dust collectors is unreliable. We recommend using flame-free venting + isolation technology (a more economical solution) or 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 an isolation valve to prevent flame propagation.

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