Supplied by the manufacturer: cyclone dust collectors, pulse bag filter dust collectors DMC-4000, air volume dust collection units

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The DMC type pulse bag filter is a bag filter developed by our factory through improved reverse design, based on the advanced technology of similar foreign products. This dust collector employs a high-pressure (0.5–0.7 MPa) and high-flow pulse valve to blow air into each filter bag for dust removal; compared with other standalone units in China, it features greater dust removal kinetic energy and higher efficiency. It is also small in size, light in weight, with a simple and compact structure; it is easy to install and maintain (external filtration type). It is widely used in dust-containing gas purification systems in industries such as building materials, metallurgy, mining, chemicals, coal, and non-metallic mineral powder processing, making it an ideal device for environmental protection and dust removal. The DMC series of pulse dust collectors currently come in six specifications, with each specification further divided into Type A, the standard version with a ash hopper, and Type B, the open-flange version (without an ash hopper). Its structure mainly consists of a filtration chamber, filter bags, a clean air chamber, an ash hopper, an ash discharge valve, a pulse jetting device, an electrical control box, etc. The entire housing is constructed using welded structures, and the access doors are sealed with foam rubber strips to ensure that the dust collector is airtight and leak-free. Working principle of the DMC type bag pulse dust collector: The dusty gas enters the ash hopper through the air inlet, and then passes into the filter bag chamber via the open flange. The dusty gas is filtered by the filter bags to become clean air, which enters the clean air chamber; from there, it is discharged through the exhaust port of the clean air chamber and carried away by the fan. Dust accumulates on the outer surface of the filter bags and continues to increase, thereby raising the resistance of the bag filter. To keep the equipment’s resistance below 1200 Pa and allow the bag filter to operate continuously, it is necessary to regularly clean the dust from the filter bags. Dust removal is achieved by a program controller that periodically activates the pulse valves, allowing compressed air (at 0.5–0.7 MPa) to be ejected through the holes in the nozzles (referred to as primary air). This air, together with surrounding air drawn in through the Venturi effect (referred to as secondary air), enters the filter bags, causing them to expand rapidly. The reverse flow of air then dislodges the dust attached to the bag surfaces, which falls into the ash hopper. The dust is then expelled through an ash discharge valve, thus achieving dust removal. The purpose of the lift valve in a bag filter is to close the air inlet to this chamber; the pulse valve is used for injecting gas in order to clean the filter bags. A bag filter is a type of dry dust filtration device. It is suitable for capturing fine, dry, non-fibrous dust. The filter bags are made of woven filter fabric or non-woven felt; the filtering action of these fibrous materials is used to purify dust-laden gases. When such gases enter the bag filter, larger and denser dust particles settle due to gravity and fall into the ash hopper. As the gas containing finer dust passes through the filter material, the dust is trapped, thereby purifying the gas. The cylinder lift valve of a bag filter is, as the name suggests, a valve; it’s just that this type of valve uses the pressure of compressed air to open and close. In a bag filter, the opening and closing of the lift valve are controlled by cleaning or filtering processes; when the bag filter is operating in normal filtering mode to remove dust, the cylinder remains in the open state ； During dust cleaning, the cylinder lift valve closes, blocking the path of flue gas from the bag chamber to the exhaust outlet. The cylinder lift valve for bag dust collectors is used in various industries, including those involving bag dust collectors. It is specifically designed for the cylinders found in bag dust collectors and is generally used in conjunction with lift valves and electromagnetic pulse valves