Description
Bụi cháy là một trong những rủi ro nghiêm trọng nhất trong hầu hết các nhà máy sản xuất. Khi bụi nổ trở thành nồng độ oxy thích hợp và tiếp xúc với nguồn gây cháy sẽ gây nổ bụi. Một vụ nổ bụi có thể xảy ra ở nhiều khu vực của nhà máy sản xuất, nhưng một trong những vị trí có thể xảy ra nhất là thiết bị hút bụi. Đó là bởi vì bộ hút bụi giữ bụi trong không khí giới hạn trong một không gian cụ thể. Một vụ nổ trong thiết bị hút bụi không được bảo vệ có thể làm nổ thân thiết bị hút bụi và đưa lửa, áp suất và các đường đạn nguy hiểm vào nơi làm việc. Điều này có thể gây thương tích nghiêm trọng cho nhân viên. Vì vậy, nếu bạn cần thu gom bụi nổ, máy hút bụi nên có chức năng phòng ngừa và bảo vệ bụi nổ.
Canvas filter + aluminum sheet
Manual shaking type
Inflammable powder/dust that might explode
Max. airflow
Dust explosion-proof motor
Canvas filter plus aluminum sheet
Material: Canvas filter plus aluminum sheet
Surface treatment: –
Corresponding models: VN-DN
Application: electrification characteristic dust
Others: dried particles (particle diameter about 10μm)
Finefil antistatic Tetron Felt + Aluminum + Earth is avilable
Three conditions leading to dust explosions
1. Oxygen
2. Dust in a concentration higher than the explosion lower limit threshold
3. Minimum ignition energy
Dust explosions occur when the 3 conditions of “oxygen”, “Dust concentration higher than explosion threshold”, and “minimum ignition energy” are all present. If even just 1 of these conditions can be eliminated then dust explosions can be prevented. So the crucial point in preventing explosions is eliminating oxygen or sources of sparks.
Dust explosion-proof motor
Electric motors, for instance, involve moving parts that can cause sparking. Dust explosion-proof motor is designed to prevent the invasion of outside substances and is designed to eliminate risks of sparks.VNA-30SDN and VNA-45SDN have mounted the motor.
Aluminum fan casing, impeller, and producer
Aluminum fan casing, impeller, and producer have been mounted on the VNA-SDN series. It prevents sparks generated by the fans.
Canvas filter plus aluminum sheet
Static electricity will make a spark and could be the ignition energy of a dust explosion. Canvas filter plus aluminum sheet has a strong and long-time antistatic effect and reduces the possibility of generating spark caused by static electricity.
Conductive paint
Countermeasures against the problem of a dust explosion caused by static electricity are indispensable. The antistatic coating Conductive paint is effective in preventing static electricity and noise by painting on metal and plastic. The conductive paint prevents the spark inside the dust collector and dust explosion.
Sealed electric control panel
The sealed electric control box is designed to structure that does not trigger dust explosion.
Earth bonding
Earth Bonding is used to reduce the risk of electric sparks by connecting bonding conductors between particular parts, it reduces the voltage there might have been.
Fire extinguishing port
In case of a fire in the dust collector, the fire extinguishing port is designed to load the Fire extinguishing agent into dust collector.
Check Valve
The explosion isolation check valve is to safeguard the surrounding workers as well as the machinery. Explosion isolation involves stopping an explosion of energy through the duct to the suction point. the check valve aims to stop blast explosion power from traveling through the duct.
Explosion pressure diffusion port
An explosion pressure diffusion port is designed to be the “weak” area of the dust collector body, an Explosion pressure diffusion port opens when predetermined pressures are reached inside the collector, allowing the excess pressure and flame front to exit to an Explosion pressure diffusion port. It is designed to minimize damage to the dust collector and prevent it from blowing up in the event of a deflagration, thereby reducing the safety hazard.
Internal design
