MANN+HUMMEL OIL MIST PURIFIER
MANN+HUMMEL’s mist collector technology separates oil mists, oil smoke, and oily dust from air. It ensures safe workshop environments and keeps machines working efficiently.
Mist and smoke are produced when machining operations such as turning, milling and grinding occur. They can create health hazards for workers and contaminate expensive CNC machine parts. Source capture reduces maintenance, downtime and energy costs while complying with workplace exposure limits.
Filtration Stages
Long-term exposure to oil mist is a health risk and it can contaminate the working environment as well as products, machines and equipment. It also lowers productivity and affects the quality of the end product. The best way to avoid this is to have an oil mist removal air system in your workshop.
These systems extract the oil mist at the source and remove it from the surrounding atmosphere. They consist of multiple filter stages which are designed specifically for the elimination of oil vapors and mist.
The 1st stage mechanical element separates the oil mist and swarf from the coolant. The swarf is then drained back into the machine sump.
Air passes through a layer of stainless steel mesh that is weaved with oil attracting oleophobic fibers. This creates irregular collisions which causes the oleophobic particles to adhere to the fibres and collect until they are large enough to fall down from the filter. This process is known as coalescing. The air is then scrubbed in stage two, where a deeper fiber bed is used to capture smaller particles. This filter has a high MERV (Minimum Efficiency Reporting Value) 15* filter rating.
The filtered air is then directed through an adsorptive carbon cartridge to remove any residual odours and vapors. The OIL MIST PURIFIER filtration system is compact and consists of up to 4 filtration stages.
Cyclone Effect
Cyclones are ocean storms that spin around a low-pressure area in the center. They cause immense wind and rain that lead to flooding, loss of life and destruction of property.
Oil mist adversely affects health of machine tool workers and is a major contributor to workplace accidents. It is therefore essential to prevent the spread of these contaminants. This is why regulations on the limitation of the exposure of oil mist are getting stricter.
The Apiste GME Series utilizes a cyclone design with multiple disks to effectively collect and remove oil mist particles from the airflow. The collection efficiency depends on the geometry of the cyclone and the rotation speed of the motor.
A branded filter has better quality factors (ratio of capture efficiency to pressure drop) than a clone separator or catch can, thanks to its more effective separation media and larger and finer separation particles. This filtration method enables the removal of more than 99.9% of oil mist at a particle size of less than 0.3 mm, making it suitable for CNC lathes, CNC integrated cutting machines, hobbing machines, grinding machines, washing tanks, closed working areas and so on.
Stainless-Steel Woven Mesh
Stainless-steel woven mesh is ideal for filtering applications due to its strength, durability and corrosion resistance. Its high tensile strength is also ideal for resisting impact and break-in attempts. Woven wire mesh has numerous openings that allow light, air and sound to pass through unobstructed. This allows for better visibility and circulation and superior acoustics within a facility. Woven mesh can also block passersby from seeing into your facilities, providing a sense of privacy and security on top of its protective capabilities.
During machining, milling and grinding processes, metalworking fluids are aerosolized into oil mists. This mist clogs machines, causing expensive downtime and reducing productivity. Oil mists can also contaminate delicate electronics. Oil mist collectors are effective at removing this airborne contamination from your facility, improving overall shop health and lowering maintenance costs.
The mist recovery air cleaner from Juwei consists of a thick filter made from different grades of woven stainless-steel wire. This filter collects the oil molecules through a 3D impact process and filters them away before returning pure air to the workplace. The result is significantly less oil mist on the machine and its surrounding surfaces, as well as lower maintenance and energy costs. Additionally, the less oil mist in the shop, the less it can corrode your machinery, leading to higher productivity and efficiency.
HEPA Filter
The HEPA filter is a special type of air filter that can trap fine particles and prohibit them from re-entering the air. It’s so effective at capturing particles that it meets stringent government standards for use in cleanrooms and other environments where the presence of hazardous substances like radioactive dust must be kept under control.
The filter works through a combination of mechanisms to trap particles. The smallest particles (down to 0.3 microns in size) are captured through a process called diffusion. The OIL MIST PURIFIER physics behind this mechanism is that the smaller the particle gets, the more it can bounce around and collide with gas molecules in the air stream. Over time, this raises the probability that the particle will come within one diameter of a fiber in the filter and stick to it. The medium size particles are collected through interception or impaction.
Both of these mechanisms are very efficient at capturing the majority of the harmful airborne pollutants that pass through the filter. This includes pollen, mold spores, dust mites, pet dander and other allergens as well as bacteria.
However, there are other harmful contaminants that a HEPA filter doesn’t address. These are chemicals known as Volatile Organic Compounds (VOCs). VOCs are off-gasses from many building materials, cleaning products and other common household items. They can be very damaging to health since they can react with other pollutants and penetrate deep into the lungs to enter the bloodstream.