Bucket Elevator Explosion Vent (Dust Removal Pipeline Explosion Vent Valve)

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 to prevent the spread of flames or the escalation of an explosion. Its working principle involves detecting changes in gas pressure and temperature inside the pipeline or equipment to determine whether there is a risk of explosion or fire. If a hazard is confirmed, it immediately shuts down the equipment or pipeline while releasing pressure to achieve the goal of protecting both equipment and personnel.

Bucket Elevator Explosion Vent (Dust Collection Pipeline Explosion Vent Valve)Brief Introduction:

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

2. Suitable for flameless venting of dust explosions in indoor equipment. It offers high venting efficiency and is cost-effective;

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

4. When used in combination with an isolation valve, it 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 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, with effective venting area meeting 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;

Industries of application: 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.

Bucket Elevator Explosion Vent (Dust Collection Pipeline Explosion Vent Valve)Working Principle:

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

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

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 machines, and buildings.

With increasingly stringent environmental inspections, safety has become a growing concern. In the past, explosion vent 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 poses risks to surrounding personnel and equipment. The pressure waves and flames from an explosion could lead to secondary or multiple explosions, creating hazards. Therefore, relying solely on explosion vent panels for dust collectors is not reliable. We recommend using flameless 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 the explosion using an isolation valve to prevent flame propagation.

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