An industrial oil mist collector air cleaner eliminates coolant and lubricant mist that can form in CNC or other industrial machine tools. These air cleaners provide healthier work environments and comply with health and safety regulations.
Mist is collected using a series of filters or an electrostatic precipitator. This electronic system draws contaminated air across an arrangement of ionizers and collection plates that attract anything conductive including dust, smoke and oil mist.
Centrifugal Separators
Centrifugal separators are a type of oil mist collector that uses the force of centrifugal rotation to separate solids from liquid. They feature a rotor that sucks in air, a series of disks or cones at the center of the cyclone that are spaced apart with an even number of gaps between them, and a motor that spins the rotor at a certain rate (revolutions per minute, or rpm).
The high-density liquid or contaminants flow out of the separator, while the lower-density components, such as oils, stay inside to be sucked up from the bottom of the centrifuge’s spinning vortex. The centrifuge then filters out the contaminants before re-entraining the clean air back into the system or fluid stream.
Tangential inlet – improves separator efficiency by reducing sidewall erosion. Stainless steel striking plate at inlet impingement – reduces rotor tip wear. Penn cone – maximizes separator efficiency by directing clean, dry swirling gases to the centrifuge outlet and back to the flow line. Perforations – allow entrainment to freely flow through drain baffle for harmless disposal.
Source Capture
When it comes to capturing harmful fumes and oil mist from CNC machines, the best way to do it is with source capture. This filtration technique involves using hoods and arms to extract mist at the point of generation, so it doesn’t have the chance to migrate into other areas and pose a safety hazard to employees.
The most important performance specification to consider when purchasing an air filtration system is the maximum air flow capacity, indicated in cubic feet per minute (cfm). This indicates how much volume of air can be handled at once without overworking the unit and reducing its efficiency.
Another crucial spec is the collector’s pressure drop, which refers to how high an operating pressure is necessary for it to work as intended. When a machine has a high pressure drop, it requires more energy to run and will not filter as well as it could.
Secondary Control
Secondary control involves aligning oneself with individuals or groups that possess established power. For example, Sally works hard to get a leg-up in the company; she networks, greases the wheels with superiors and molds relationships in an attempt to change her standing within the organization. This type of passive control reflects the cultural values of collectivist cultures, which lean heavily toward avoidance of conflict and submission to personal fate.
A useful control technique that allows for simultaneous control of multiple process variables is cascade control. In this method, the primary controller varies its internal set point according to the water quality monitor signal received at the chlorine contact tank outlet; the output of this second controller then adjusts the chemical dose rate to bring the water quality indicator reading and residual at the primary reactor outlet back into equilibrium.
Until now, conclusive research on secondary control has been hampered by disparate interpretations of the construct. The new measure’s development aims to eliminate these ambiguities by offering a definition and dimension along which researchers can articulate assumptions about the function and correlates of this control strategy.
Multi-Stage
More than 35 years old, centrifugal separators rely on the force of centrifugal motion to thrust impurities outward from the center of the device. However, when they’re used to collect oil mist, their sponge-foam filtering pads quickly become saturated, reducing airflow and the amount of impurities that can be processed. This decrease in efficiency allows mist to escape into the atmosphere.
Multi-stage systems use an initial pre-filtration cartridge, a cyclonic separation chamber and a final stage filter to achieve as high as 99-percent filtration with residual mist concentrations below 0.2 mg/m3. They’re designed to eliminate the maintenance requirements of electrostatic collectors and the noise and vibration problems associated with centrifugal type units.
The electrostatic technology used in some oil/coolant mist collectors was originally designed to eliminate dust and other particulates in air handling systems and to remove dry smoke. When continually exposed to oil/coolant mist, the cells become coated with layers of liquid and eventually lose their ability to clean the air.
