Dryflo® Coolant Oil Mist Collector | Donaldson Industrial Dust, Fume & Mist

Overview

Dryflo® mist collectors from Donaldson Torit® are effective and efficient mist filtration solutions, providing a more productive work environment by reducing coolant and machining oil mists in a machine-mountable package. The Dryflo provides high performance technology and easy, predictable maintenance.

Dryflo filter changeout

High performance three-stage filtration improves collection efficiency at every stage
Provides a cleaner work environment for maximum productivity
Reduces risk of mist related hazards
Quick and easy filter changes—workers have minimal contact with collected oil
Predictable maintenance with a differential pressure gauge
Lower plant maintenance costs
Mounts directly onto a machining center to collect oil, water-soluble, semi-synthetic and synthetic coolant
Low profile

Dryflo Filter Media

Dryflo filter media is made from proprietary synthetic media incorporating both small and large fibers for optimum filtration. The smaller fibers provide increased filtration efficiency; after mist is captured and coalesced, the larger fibers allow the oil to drain from the filter. The media also incorporates a proprietary corrugation method which maintains uniform airflow and lower pressure while the media is saturated with oil.

Dryflo First and Second Stage Filters

High Performance Three-Stage Filtration Improves Collection Efficiency at Every Stage

First Stage

A prefilter that removes larger mist droplets, metal dust and swarf captured by the collector. Wire mesh thin screen and polypropylene mesh are available.

Second Stage

A three-layer wrap of synthetic high-loft material collects small mist drops into larger oil droplets, which drain out of the mist collector.

Dryflo Third Stage Filter

Third Stage

Collects, coalesces and drains the finer mist droplets generated by metalworking applications. Along with vertically oriented pleats, the third-stage filter cartridge incorporates the Pleatloc™ media spacing system, which enhances drainage and provides a lower pressure drop, higher filtration efficiency and less re-entrainment of collected mist.

Mist Filters

Donaldson oil mist collection filters are specially designed for applications using straight oils, mineral oils, water-soluble and synthetic and semi-synthetic coolants.

Long Lasting Efficiency

The Dryflo cartridge is a proven, highly efficient mist filter that actually increases efficiency over time when collecting soluble oil or synthetic fluid. In tests conducted by the University of North Carolina (UNC), the Dryflo was shown to offer increased efficiency over time, resulting in longer HEPA filter life and reduced HEPA filter replacement costs.

Gauging Efficiency

Using UNC’s protocol for evaluating the cartridge efficiency, Dryflo mist collectors with HEPA final filter are a reliable, high performance filtration solution. To prolong HEPA filter life, the upstream filter stages must also be highly efficient. HEPA life depends on the cumulative loading it receives, which in turn, depends on the performance of the upstream collection stages.

Evaluating efficiency as a function of droplet diameter and pressure drop over 14 days, UNC protocol determines the size distribution of droplets generated during a variety of wetmachining operations. Droplet sizes ranging from 1.8 micron to 3.2 micron were tested to determine the average efficiency of Dryflo collectors on soluble oil and synthetic fluid.

Average Efficiency of Dryflo on Soluble Oil and Synthetic Fluid
Droplet Size	Dryflo Collector with HEPA	Dryflo Collector without HEPA
1.8 micron	100%	98%
3.2 micron	100%	100%

Features

Collector Design	Standard	Optional
Mild Steel Construction
Inlet Gasket
Inlet Collar
Inlet Hopper with Legs
Inlet Hopper with Vibration Isolators
Inlet Hopper with Flex-Duct
Inlet Hopper with Impact Separator
Machine Mount
Ceiling Mount
Collector Stand or Cart
Junction Box
Drain Collection Container

Cartridge Filters	Standard	Optional
First-Stage Wire Mesh
Variety of Other Prefilters
High Efficiency First-Stage
Dryflo Cartridge Filter with Wrap
Fourth-Stage HEPA Filter
Fourth-Stage 95% DOP Filter

Paint System	Standard	Optional
Prime Coated Interior
Textured Multi-Coat Paint Finish with 2,000-Hour Salt Spray Performance
Custom Paint Colors
Premium Duty Coating

Electrical Controls, Gauges, and Enclosures	Standard	Optional
Minihelic* Pressure Gauge
Manual Motor Starter
Type 12 (NEMA & UL) Motor Starter
Remote Start/Stop
Machine Tool Interlock
Mounted and Prewired Motor Starters

Warranty	Standard	Optional
10-Year Warranty

* Minihelic is a registered trademark of Dwyer Instruments, Inc.

Accessories

Contact your Donaldson Sales Representative to order. Availability varies by country.

Resources

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We can help you get the optimal solution for your application.

FAQs

Q. What Size Are Mist Droplets/Particles?

A. Mist can generally be defined as a liquid droplet 20 microns in diameter or smaller. Oil-based fluids typically produce mist droplets that range from 0.5 microns to 10 microns. A smoke droplet is typically smaller, from 0.07 microns to 1 micron, and is a solid or liquid aerosol.

Q. What Determines the Performance of a Mist Collector?

A. A mist collector can be characterized by pressure drop, efficiency, and flow rate. Pressure drops affects the energy required to pull the airflow through the system. The efficiency of the system determines how clean the air will be as it leaves the collector and flow rate determines how much air will be cleaned.