The cartridge dust collector is an excellent choice to replace the common bag-house or dust bag type collector and can be used to collect almost any dry, fine dust particulate. The cartridge offers a large amount of cleaning filter material in a very compact area. Cartridge dust collectors take up much less space than bag house collectors and offer an impressive filtration efficiency of 99.7% against 1/2 micron particles.
All of our collectors are designed with an abrasive resistant, inlet to extend the filter life. The filters are cleaned with a single reverse pulse of compressed air during a down-time period. The reverse pulse is manually actuated with one or more 1 1/4 manual ball valves located on the front of the unit. It can be used at any time to remove dust from the filters and improve airflow during operations or after the dust collector is shut down. Generally this is done 1 to 2 times per day. All our units are equipped with an acoustical dampening package that will meet or exceed all noise level requirements per osha specifications.
Our collectors offer straight radial impellers that can generate a static draw starting at 8 inches of water column to as high as 25.9 inches of w.c. The vertical placement of filters allow for the best possible release and removal of dust from the pleated filters with one reverse pulse. These collectors have between 2 to 24 cartridges. They all use a 99.7 % efficient cartridge that contains 226 square feet of total cleaning surface area each. Each 26 inch long and 12.75 inch diameter filter cartridge has pleats that are 2.375 inches deep. The center opening of the filter is 8 inches in diameter and is open on both ends before installation.
All of our reverse pulse, cartridge dust collectors come with a 1 year warranty against defect in workmanship or materials. We also offer an 80% return of the purchase price, excluding freight, for the return of the collector within 60 days after receipt of delivery if this unit fails to perform as described.
VERTICAL VS. HORIZONTAL SYSTEMS
These units use a vertical filter system that offers three major advantages over conventional horizontal filter collectors. The first advantage is that the dust cake does not pulse onto the filter located directly below it. Most filter cartridges are pleated to expand the filter material. This is why they offer high square footage of filter material in a very compact area. Most cartridges have pleats that are 2 to 3 inches deep. These pleats run perpendicular to the top and bottom plate that anchors the filter material in place, much like the grooved support columns pictured on the back of a $5.00 bill. The grooves represent the filter pleats. Vertical filter systems allow the dust cake to be evenly pulsed off 360 degrees around the filter circumference. The pleats are pointing outward from the center of the filter from top to bottom. Gravity is then aiding in the removal of the dust cake. It is blown off and falls away from the filter and not onto another filter located directly below it. No matter how high the filter column is, the waste material always falls off evenly without affecting other filters.
But a horizontally oriented filter system must pulse 40% of the filter in an upward direction because the orientation of the pleats is pointing upward. A good example is to position the building on the back of our $5.00 bill demo in the wrong direction. Then gravity is working against the released dust cake. Gravity will pull the dust back down and onto the top portion of the filter, not to mention the additional effects of the vacuum which we will cover later. Placing a cartridge in a dust collector unit horizontally causes the pleats on the top half of the filter cartridge to effectively fill up like a paper file folder and render this area severely impaired and impossible to clean. Only the top row of filters is exempt from having added dust dumped on it from the filter positioned directly above it.
The second advantage of vertical filter systems is that the pleats are held securely in an up to down configuration. Take that $5.00 bill and fold it in half the long way and crease it firmly in the center. It will now stand rigid on a flat surface and will exhibit considerable strength against a downward applied force when the crease is running vertically. But if you lay it down with the crease running horizontally it will fold up and flatten with very little downward pressure. So too will the paper composite pleats sag downward when they fill with dust. This is especially true at the center of the filter. The weight of the dust causes the top pleats to open like our example. This makes even more room for dust between the pleats which compounds the problem. The weight of this dust causes the pleats to sag downward along the sides of the filter and compresses them together at the bottom of the filter. The longer this goes on, the weaker the filter material becomes and the worse it will sag. If the weight becomes too great, it can actually cause the filter to rupture. But this compression of the lower pleats and filling of the top pleats further reduces air flow thru the filter in these areas. This sag is completely eliminated in a vertical filter system because any added weight from the dust cake is constantly pulling the pleats rigid. So the more pull is exerted against the pleats the more rigid they become where as a pushing force would cause them to fold over easily. This is important because when you pulse a filter that is very heavy with dust in the vertical position you have built in extra rigidity. But when you pulse a filter heavy with dust in the horizontal position you add additional stresses that are never present in the vertical system.
The third major advantage of a vertical filter system is a composite of the first two listed above. But in light of the first two reasons, a vertical system can use less than half the number of filters without changing any internal dynamics which will be covered later on. This saves money by eliminating unnecessary filters and unnecessary filter change-outs due to premature wear and filter media degradation. On average you will experience 2-4 times the life expectancy out of identical filters under identical circumstances in a vertical system. And it saves floor space. In the above examples alone, half of the filters, based on total surface area, have been rendered useless within days if not hours of operation in a horizontal dust collector system. Over the life of a dust collector, you should expect to spend up to 8 times the amount on filter replacements with a horizontal filter system.
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