How are the dust collector classified?

Five common types of dust collection equipment are fabric filter baghouses, inertial separators (like mechanical cyclones), cartridge collectors, wet scrubbers, and electrostatic precipitators. Baghouse dust collectors come in various designs and are the most commonly used system because of their 99% efficiency.

What is a baghouse dust collector?

Baghouse dust collectors are a fabric filter air-material separators employed for particulate removal from manufacturing and other industrial operations to keep dust and solid particulates from entering the workplace or being released into the atmosphere.

What are baghouse filters made of?

Fabric filter baghouses or bag filters (BF). In these systems, the gas stream to be cleaned passes through a fabric filter (which may be made of different materials, such as polyester, acrylic, or Teflon). The particles are thus deposited on the surface of the fabric, usually in the form of sleeves or bags.

Is a baghouse a confined space?

The inside of a baghouse is almost always classified as a “confined space” for safety reasons.

What are the advantages of baghouse filter?

There, the dirty air enters, and, as it is pulled up, the filter collects dust and particulates inside the bag, and clean air exits through the top. Its primary advantage is its low initial investment costs, fundamental design, and simple operation.

What do baghouse filters remove?

A baghouse, also known as a baghouse filter, bag filter, or fabric filter is an air pollution control device and dust collector that removes particulates or gas released from commercial processes out of the air.

How does a pulse jet dust collector work?

A pulse jet dust collector is a suction and filtration system. As dust-laden air is drawn into the system, filter media will collect dust, while clean air is discharged from the collector. Compressed air is applied in reverse pulse to clean the filter media.

How do you size a baghouse?

First calculate the total cloth area of your collector by calculating the total filter area of each filter (bag diameter x 3.14 x length ÷ 144 [for number of inches in a square foot] = filter cloth area) and then multiply that figure by the total number of bags in the collector.

How does a dust collector work?

A dust collection system works by sucking air in from a given application and processing it through a filtering system so that particulate can be deposited into a collection area. Then the cleaned air is either returned to the facility or exhausted to the environment.

What is bag filter dust?

The Bag Filter is a dust control device whose purpose is removing the dust contained in the exhaust gases from industrial process. It is applied to the various applications with different temperature and type of gasses by selecting the filter media accordingly.

How is dust collector size calculated?

Depending on the dust characteristics, the correct CFM value should be approximately 100–200 feet per minute of air velocity multiplied by the cross-sectional area of the hood in square feet.

How do you calculate dust load?

To calculate loading, take the dust being sent into the collector (lb/hr) and multiply it by 7000 grains/lb. You then calculate the total system air volume per hour. Finally, divide the grains per hour by the total airflow in an hour to get grains/cu ft.

How do you calculate velocity?

Provided an object traveled 500 meters in 3 minutes , to calculate the average velocity you should take the following steps: Change minutes into seconds (so that the final result would be in meters per second). 3 minutes = 3 * 60 = 180 seconds , Divide the distance by time: velocity = 500 / 180 = 2.77 m/s .

What is a 2 stage dust collector?

A two-stage dust collector consists of a first stage cyclone, a blower and a second stage after filter. A cyclone separator is a cone shaped vessel into which the dust-laden air enters. The dust particles’ inertia causes them to move toward the separators outer wall.

How do you calculate CFM for dust collection?

For a rectangular port, calculate the area (multiply length times width, in inches). Then, multiply that area times 28 to find the approximate flow in CFM @ 4,000 feet per minute (FPM).

Is a 2 HP dust collector enough?

My suggestion is to start with at least a 2 HP system to draw dust through your duct work if your shop occupies a single garage stall. If your tools are spread out across the equivalent of a 2 car garage, you will want a 3 HP dust collector.

What is a Thien baffle?

An alternative form of cyclone is what is known as a ” Thien-baffle”. In a Thien-baffle, the air spirals in a flat shape from the edge to the center, whereas in a cyclone it moves in more of a helical pattern down the cone and then back up the middle.

How many CFM is the Harbor Freight dust collector?

With 1550 CFM air flow this portable dust collector is more effective than many big stationary units. The upper filter bag screens out particles as small as 5 microns – 1/10 the diameter of a human hair. The lower collection bag is translucent so you can see at a glance when it’s time to empty.

Is a 650 CFM dust collector enough?

A 3/4 -hp, 650 CFM collector, like the wall-mounted unit shown below might be the perfect solution for a small shop. It’s small enough to move around the shop as needed and conveniently hangs on the wall, out of the way of your tools. In spite of its small size, I found this type of unit worked very well.

How long do dust collectors last?

The service life of dust collector cartridge filters can vary widely. Depending on your system and operations, your filters may last as long as a year, or it may need to be changed as often as every three months. There are a few variables that impact the life of your dust collector filter.