The application of bag dust filter bag

Bag filter is one of the industrial equipment that is very important in the industry. This device controls and manages dust particles in a special way and collects the pollution in industrial environments and boilers. This device controls sulfur dioxide and other dust particles that are seriously dangerous and toxic to employees. Industrial dust collectors play the role of air conditioning in industrial environments, especially the drilling industry. The filter bag consists of a chamber with filters inside the bag filters. If you want to know what is the use of this essential device in the drilling industry, we must say that this device with the ability to remove solid particles in the air has been made since 1970 after fabrics and fibers with a temperature tolerance of 350 degrees were invented and used in industries Various became popular.

Dust filter or bag filter is one of the types of air filters that are used to absorb and remove dust and other particles suspended in the air. These filters are used in air conditioning systems, factories, industries, cooling towers and other similar applications. The way this device works is that the dust-carrying gas enters the filter and is returned to the exit funnels by means of a baffle. After entering the dusty gas into one of the filter houses, the large diameter dust particles move towards the hopper under the influence of their own weight. When the thickness of the accumulated dust on the bags reaches such a level that the flow is difficult to pass, it is time to clean the bags. In fact, the function of the inlet part is to reduce the speed of the gas and give the large particles the opportunity to fall freely into the air chambers under the filter and cause the complete distribution of the gas that carries fine dust particles between the bags. The spread of gas prevents the gas flow from causing excessive wear on the bags. The gas containing the dust goes around the bag and then enters the cleaning air chamber and then the suction fan sends it to the chimney. This operation is done successively until the pulsed air is blown into the bags by the electrical panel periodically through the nozzles and causes the materials to be separated from the outer surface of the bags. The separated material enters the Harper and from there it is directed out of the filter by transfer systems. When using bag filters in dusting gases from combustion and cooking cleaner, the issue that should be considered is the amount of filter bags against high temperature gases. The use of bag filters makes the gases dedust up to 10 milligrams per cubic meter. It should be noted that bag filters are the most widely used among dust collection systems. Because they are both economically affordable and have a much higher efficiency. Fabric filters are installed in rows vertically in metal housings on a metal plate.

The components of the bag filter and bag dust collector system include 10 items, among which are: Bag-like filters Storage cages Bag filter housing and shell Hopper Dust extraction device Air compressor system Cleaning system of bag filters Regular bag filters (cylindrical) fan device Bag of modular filters Filter bag with flat bags

Different cleaning methods and systems are used to clean the bag filter or bag dust collector. Bag filters are divided into different types based on the type of bag cleaning system.

In this method, by connecting one side of a cylindrical bag filter to a moving plate and then shaking that plate by a motor, the bag filters shake and the dust is removed from the bag filter. Due to the low air-to-fabric ratio for this type of bag filter, a much larger number of bag filters are needed, and this causes a lot of work space for these bag filters. During vibratory operation, the system is out of line and their operation system is periodic. At the end, the dust particles are collected inside the hopper and transferred to a specific place.

This system is more common today for fiber dusts such as dusts from wood or grain processing. The mechanism of this system is such that the reverse air produced by the fan and the medium pressure blower is directed to the bags by the rotating arm and the reverse air is blown into them. Then the dust is separated from the bags. Different types of reverse air flow bag filters produce less air than other methods such as pulse jets. The advantage of this method is that it is a low-pressure, high-volume cleaning system that reduces wear and tear on the bags.

This system has the highest efficiency compared to other types of filter cleaning systems, which does not need to remove the filter bag from the line during its operation. Today, Jet Plus bag filters are the most common type of bag filter. The mechanism of pulse jets is such that the compressed air produced by the compressors is blown into the bags by separate nozzles on top of each bag. By blowing the air inside the bags, the dust is separated from the surface of the bag and finally the bag is cleaned. A guide tube is located above each row of bags, one end of which is closed and the other end of which is controlled by an electric valve. When the pulse jet system is used, the valves are opened and the air inside the pipes flows in a compressed manner. A venturi is used to direct the air inside the bags, and by blowing compressed air inside the bags, the dust on the surface of the filters is separated and pulled down, and then collected by the hopper. The end of the hopper is connected to a rotating valve and directs the collected particles out of the bag house.