Filter-equipment plays a key role in a wide range of industrial processes. From power generation to commercial water, filtration systems help companies reduce waste and save money.
Air filters keep equipment from overheating, while liquid filters separate suspended solids from fluid streams. Both types of filtration are used in industries from power generation to food and beverage production.
Filter-equipment systems remove contaminants from liquids to improve the quality of water for drinking and industry use. They may consist of complete systems or replacement elements, and are designed to meet key performance specifications including flow rate, particulate size, and filter grade.
Filters are used to remove sediment, dirt, sand, rust, and other particles from water. They are found in waterworks, swimming pools, household appliances, and many industrial processes.
These systems also improve the taste and quality of water. They reduce lead, bacteria, chlorine, odors, and scale. They can also extend the life of appliances and reduce corrosion on equipment.
A variety of filtration methods are used to separate fluids, including microfiltration, ultrafiltration, nanofiltration, and reverse osmosis. Some methods are mechanical, and others are chemical.
In the simplest form, filter-equipment a filter separates solids from a liquid through pores in a porous medium. A filter can be made from paper, cloth, cotton-wool, asbestos, slag- or glass-wool, unglazed earthenware, or sand.
Other filtering methods include filtration membranes and microfilters, which are a thin, fine-pored wall. These types of filters can filter out even the smallest waterborne viruses and bacteria, which make them ideal for drinking water.
The pore sizes of filtration membranes can vary, ranging from 0.1 to 10 um. These membranes are primarily used for drinking water, but they are also found in other filtration applications.
Water treatment plants and river streams also use filtration to eliminate sediment and dissolved solids. Furnaces and boiler feed systems often employ filtration to prevent fouling on the furnace elements. Pneumatic conveying systems also use filtration to stop or slow the flow of material.
These types of filtration systems are essential in industrial manufacturing. If components like coolants or machine fluids are not filtered properly, they can become very contaminated and toxic. This can damage the machinery and cause expensive repairs or replacements.
In addition, filtration is important in keeping the coating of machinery from becoming tarnished and damaged. Without effective filtration, these particles can erode the coating and reduce the overall efficiency of the system.
Filter-equipment elements are components that are used in filtration processes to separate solids from liquids, gases or other fluids. They include filter mediums, the porous material that holds onto solids and a clear liquid called the filtrate that emerges from them.
In general, the filter medium has a complex structure through which only fluid can pass, but solid particles are retained by the medium and become part of the filtrate. The size of the particles that can successfully pass through a filter is called its effective pore size.
Most filtration processes use a combination of filtration mechanisms to remove particulate matter from the fluid. For example, in a floc tank, water will be pumped through a filter to trap the particulate floating on it before it rises to the top of the floc tank and is skimmed off for conveyor removal or to be recycled.
A filter can be made from paper, cloth, cotton-wool, asbestos, slag- or glass-wool, unglazed earthenware, sand, or other porous material. The solids accumulated on the filter are known as the filter cake, and the clear liquid that emerges from it is called the filtrate.
Various types of filters can be used for different purposes. Some of them are more efficient than others in removing particles. The effectiveness of a filter depends on the pore size and the thickness of its medium.
Other types of filter-equipment are used to separate air from other substances, like in an air conditioner to remove dust particles or in the treatment of drinking water. They can also be used to remove rust from a pipe, to prevent clogging in an air pump and to stop sewage flow by preventing it from entering the drain.
For example, the filter used in a microfluidic system consists of an inert porous medium that is reinforced with a thin layer of metal that is pleated, giving it a complex lattice structure that only the fluid can pass through. This makes it a very effective type of filtration.
A filter rack is a frame that holds a removable filter within an air handler enclosure. The frame includes two opposite sides that are urged apart by a spring to help hold the rack in place within an enclosure.
Filter racks are commonly used in filtration systems because they allow the filter to be easily removed and replaced. They are available filter-equipment in many different configurations and designs to suit the needs of each individual application.
The frame itself is generally rectangular in shape, with two fixed side members 42 and 44 that extend to form a channel that can receive one or more filters 24. In some instances, the channel can be angled to adjust the width of the filter, and in other cases, it can be positioned in the center of the rack, as shown in FIG.
In the case of a channel that can be angled, it may be formed in a cylinder of perforated metal that supports a wire mesh cloth. The wire mesh cloth is spot welded over the cylinder to form a filter basket, and it is available in a variety of sizes.
Alternatively, the filter can be a laminar foam material, i.e., it has an inlet surface layer 12, an intermediate layer 20A and an outlet surface 22B. Fluid enters the filter and passes through a series of curvilinear passages 40, extending from the inlet surface 12 to the outlet surface 14.
The walls 30 are areodynamically designed to streamline the flow of fluid through the filter, and each cell 50 defines a labryinth of passages 58 disposed along a central axis 59. In each cell 50, the fluid is pumped through the walls 30, with the flow of the fluid exiting the filter via a chute 52.
Another option is to include a rail that moves toward the central portion of the rectangular shape of the filter assembly, i.e., the filter frame 28. This helps to reduce the amount of installation work that is required by the installers.
The rails can be urged against the filter frame 28 by using one or more leaf springs, each including a bow 74 that abuts a flange 76 on a side member 42. A tab 78 extending from a central portion of the bow 74 protrudes through a slot 80 in the flange 76 and attaches to the filter rail 70.