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FOEHN Modular Pulse Jet Cartridge Dust Collector

Performance: 600 — 38000 cfm (1020 — 64500 m³/h)

Dust cleaning efficiency of 99,9% depending on the dust load and temperature. All characteristics

Price: varies depending on the package

5-Year guarantee

Easy installation and operation

Over 10 years of service life

Eco Friendly

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The cleaning efficiency rate for dust at least 0,5 micrometers in size is 99,99%. Efficiency depends on the type of dust, temperature, and moisture.

Cartridge Dust Collector Description

VIEW PDF CATALOG FOEHN MODULAR

FOEHN is a horizontally positioned, universal, modular, compact dust collector with an automatic cleaning system. It is suitable for cleaning air of sprays; plasma, laser, and gas cutting; metal welding; as well as various types of non-sticky, non-explosive dust and fumes.
It is the most compact, stationary cartridge dust collector that we produce.
FOEHN's filters use a filtration technology via cylindrical filtering elements, specially patented filter material, and original pulse jet progress to boost the carrying capacity of air flow compared to other cassette filters of the same size.
Thanks to our very own Air Life filter cleaning system, the peak pressure in the cleaning cycle is augmented while at that same time its efficiency is improved by nearly 25%, a truly unsurpassed achievement.

Reliable, cylindrical cartridges

They provide a longer filter lifetime as well as a higher filtration efficiency and, consequently, operational savings for you!

Larger filtration material area

The folded filtration material structure is very compactly designed and a single such cartridge has a filtration surface of 15-20 bags!

The most common type of cartridge

Thanks to the great popularity of cylindrical cartridges, you can quickly find the one that suits you and replace it with ease.

Economical Cartridges With Automatic Cleaning

Modular Design is Our Main Area of Expertise

Increase efficiency by way of adding an additional filter module.

The large-node, bolt-mounted assembly takes place based on instructions, as in the case of furniture assembly, with no welding or complex manipulations.

Thanks to the modular design, delivery of the filter requires no special transportation and takes less time to perform.

Fast efficiency enhancement

Quick and easy installation

Simple, quick transportation

Improved Construction According to the Client’s Individual Tasks

Powerful and efficient fans

Selection of the best performing fan from the perspective of efficiency, pressure, and energy consumption.

Under pressure or discharge

The filter works both under pressure and under negative air pressure from the fan.

Simple maintenance

The filter's design is made in such a way that servicing takes up a minimum of time. It features the ability to install service hatches and doors.

Compact

Takes up minimal space and is made ready for quick operation

Properly designed and tested at various production sites

Proper air passage speed through the cartridges allows for air to be excellently filtered and the cartridges to clean themselves as well. That renders the cartridge collector economical and reliable.

Optional alternate design

Based on the client's wishes, the design and size can optionally be changed, and performance can also be augmented. We have a large selection of additional package elements.

Fundamental Differences From the Other Models

-1-

Quickly removable lids provide access to the filter's elements

-2-

The new frame design with convex side walls have allowed for a boost in air flow via the filter and the sectional area of the frame. The convex side walls have provided for greater distance between the filters, a reduction in the air speed inside the filter, and, consequently, a reduction in abrasive impact.

-3-

It possesses 25% more power than other machines of the same size.

Areas of Use

The dust collector is suitable for most areas of industry and enterprises.

Chemical industry
Metallurgical industry
Glass industry
Metal processing
Pharmaceutical industry
Welding
Mountain ore procurement
Engineering enterprises

QUICK SELECTION BY SECTOR

How It Works

Contaminated air enters FOEHN through an air pipe or a gas pipe into the dirty chamber, after which the dust particles settle onto the levelled cartridge while the cleaned air passes through the cartridge and enters into the clean chamber, after which it exits the collector with the help of a fan back into the facility.

The cleaning of the dusty filter elements is performed using a compressed air impulse. The compressed air arrives into the blowing pipes from the receiver via the electromagnetic valves and continues on into the filter cartridges. The compressed air impulse strikes the dust on the outer surface of the cartridge. The dust shaken off from the filter elements falls down into the hopper and is removed from the filter via the discharge device.

Specification

The Specifications depend on the package elements. For each client, we create a project based on a detailed survey about the production site and the nature of the dust.
The dust collector can optionally be designed as unconventional, depending on the client's technical task.
Thanks to the technical advancements we’ve completed, we've managed to raise the carrying capacity and extended the filter's service life.

CASE STUDY: Optimal Dust Collector Selection for CNC Cutter & Grinding Machines

For a company providing equipment selection services in copper processing, we designed a custom dust collection solution for CNC Cutter & Grinding machines. Located in South Texas, the facility required a dust collector to handle fine copper dust from low-volume operations, installed outdoors under specific logistical conditions.
Working closely with the client, we evaluated operational needs such as daily hours, dust type, and space constraints. The result was an efficient, cost-effective solution with optimal performance, durability, and ease of maintenance. Read

Package

Basic package per module

According to the technical task of the client, there may also be more modules.

Coated steel frame

1

Supports and hopper

1

Compressed air receiver

Set

Diaphragm valves for cartridge cleaning

Set

Filter cartridges

Set

Hopper level emergency indicator

1

Hopper dust gate

1

Control panel

Set

User manual, operation instructions, and installation instructions

Set

Certificates and patents

Set

Additional package

We always accommodate the client and are willing to add all necessary functions, as well as other characteristics and parameters to the standard package elements.

FIRE EXTINGUISHING AND SAFETY

The explosion-safe design entails an installation made of explosion-relieving membranes (an excess pressure membrane), the use of filter elements with anti-static fibers and threats, additional grounding systems, 64 IP electricity, etc.
Fire extinguishing system
Explosion relieving membrane on the filter frame
Dust pneumatic discharge or vibration discharge system for the hopper
Chemical-resistant coating

MAINTENANCE

Floors and stairs for filter maintenance
Deck under the filter and hopper with maintenance floors.

HEATING AND THERMAL INSULATION

Hopper insulation (conical dust collector)
Filter frame insulation
Insulation and heating regeneration system
Hopper heating (conical dust collector).
Heating of the filter, individual parts of it, and heat entry toward the valves.

MANAGEMENT AND CONTROL

Smooth launch device (frequency transformer) for the fan, worm, and gate
The special control board is built based on a relay with a management module, connection, and controls. The control board, tailored to your assignment, provides: data collection from the dust, pressure variation, and equipment condition transmitters (fan, worm, feeder)
Operation condition, emergency, and technological blockage alarm systems
Emergency stop
Device deactivation from the fire alarm signal
Differential manometer variation between the “clean” and “dirty” areas

DESIGN AND FILTER

The filter frame can be designed to have different types of steel.
Oil and moisture separator
Fan of different types: high pressure, medium, dust, corrosion resistant, and others
Different types of valves: reverse, flame, and overflow
Different colors of RAL coating
Dust hopper
Additional cleaning (control) stage that allows for the remaining concentration of dust no more than 0.0001 ppm to be taken care of

DUST COLLECTION HOPPER

Screw conveyor
Dust discharge box under the hopper
Gate for discharging the hopper.

PERFORATED DUST CASSETTE

A perforated dust cassette can be installed in front of the filters so that the dust settles right down into the hopper and reduces the wear on the cartridges. More even distribution of gas flow along all the cartridges increases their service life and helps save on operation costs.

Modifications, Dimensions, and Drawings

A modification is a filter variation with a different quantity of modules. Adding modules entails a change in general performance, filtered air volume, size, and other specifications. FOEHN cartridge dust collector consists of one or multiple modules.

The recommended performance of a single module is no more than 8200 cfm and in order to increase the performance of the cartridge dust collector, it is required to install an additional module (see example in drawing below).

A collector can optionally be designed with non-typical size depending on the client’s technical task

Diagram of a Cartridge Filter

Design

The collector's design entails the option of manufacturing various configurations which take into account the unique features of the facility: ceiling height, amount of free floor area, air duct positioning, etc.
the entire range of our equipment. There are representatives of US spare parts suppliers in every region.

The people responsible for this service on Torch's behalf are the chief technology officer, the chief designer, and the head of maintenance services.

Filter Cartridges

We use a channeled cartridge as the filtering component. Thanks to the folded structure, the filter material is placed very compactly. For instance, a single standard cartridge of Ø12.8 in, 39 in tall has a filtering surface area of 178 ft² and replaces 15 - 20 bags.

The filter material entails a very thin (about 0.02 in), solid material with small pores. It is rated within the F7-F9 classes in terms of Eurovent’s cleaning quality standards, outperforming in this component materials usually used in cartridge filters.

The gas goes from outside the cartridge and enters and the dust particles settle on the outside part of the filter while the clean air passes inside the cartridge and leaves the filter outside.

The filter component becomes dirty every now and then and is cleaned by air impact. The concentrated impulse from the air valves shakes the cartridge filter material and the dust settles inside the hopper. Cartridge cleaning is performed without any halt in the filtration cycle.

The filter cartridges withstand a dust load of up to 2 ppm. A Cyclone will have to be placed in front of the equipment if the load is to get any more than that.

Dust Hopper and Discharge

In its standard package, FOEHN has a conical accumulator hopper for dust and a round gate with a manual gear for opening and closing or a box on wheels.

Additional hopper package elements

A vibrator or a vibration device to prevent dust from sticking to the walls of the hopper.
Level transmitter.
Hoppers and supports according to the demands of your production site. For instance, for our client, we tailored the hopper for big bag discharge at their wood processing enterprise.
Worm hopper for continuous dumping of dust out of the hopper with a gate. Thus, the filter won't have to be halted in order to unload accumulated dust.

Captured Product Discharge

Discharging organization methods for the client to choose from:

The basic package features use of the manual method, which is done using a manual hatch which when opened manually and the dust unloads out of the dust aggregator into some volume or, when dust falls into a connected volume (box) without a hatch.The automated method: a flood gate or a double flap is used for unloading, often together with a worm transporter.
The automated method uses a gate or double dump for discharge, often along with a worm transporter.

The main distinction is manual labor which must be exerted to unload the captured product. The automated method can be combined with a production line and, for instance, the product can be returned back onto a conveyor belt.

A hand dust latch

Automatic “flood gate” (feed)

Mechanical “double flap”

Cartridge Dust Collector Management

Smart control automation ensures uninterrupted operation.

Filter control is performed using a controller or a remote control. This system works in a closed cycle, but it can be reconfigured depending on the client's needs.

We propose packaging the filter with a completely automatic control system, analysis, fire extinguishing, etc. In the standard package, a temporary controller is installed and it can also be packaged with a Siemens controller depending on your needs.

Pulse Jet System

The filter cartridges end up covered in “sticky” dirt every now and then, which increases the filters’ resistance. In order that the system works without interruption and without any variations in pressure, cartridges must be cleaned. The cleaning is done in the following way:

At the top, there are air pipes in the clean air chamber which follow from the air cleaning diaphragm valves. These valves are installed on the receivers where the compressed air is located which is used for air impact.
The air in these receivers is fed from the compressor. Every now and then, the valve begins operating, the air is fed into the tube through the valve, and then out of the tube it is distributed inside the filter cartridge with the help of nozzles.
The filtered cartridge is shaken and blasted. Then the dust falls down into the accumulator hopper.
The dust can be extracted from the accumulator hopper in three ways, depending on the technical task declared: a manual dust latch, a mechanical double dump, and an automatic gate. The standard version comes with a manual dust latch.

Pulse Jet Cleaning System Package:

Innovative development: air pipes system with a cleaning enhancer

They are either metallic or plastic. It all depends on the gas and temperature that the filter is cleaning. Nozzles are installed on the air pipes for more efficient cleaning of the filter component. A special cleaning enhancer is installed above the cartridge, which helps improve filter shaking and extends its service life.

Compressed air receiver
It is the receiver that accumulates air for air cleaning. If there isn't enough air, the degree of cleaning will fall, the wear on the filters will increase, and the filter's performance will fall, since the filter’s aerodynamic resistance increases. There is a connector on the receiver to the compressor or to the general factory compressed air pathway as well as moisture drain valve.

Air valves
All valves are certified. Our valves are specialized for filter equipment air cleaning systems.

Controller
Regeneration system control is performed with the help of a special controller that configures the quantity of impulses and the frequency of the impulses.

Differential manometer (by order)
With a manometer, cleaning of the filter not only varies in time but also in terms of how “stuffed” the cartridge gets. When the pressure falls in the filter chamber, the manometer submits a signal to the controller to initiate blowing.