The upper and lower tank dust collector is an ideal dust removal equipment to solve the problem of dust raised when dumping materials into the ore tank. When materials are dumped into the ore tank, the air and material volume brought into the tank due to the unloading of materials will be expelled into the ore tank. The air in the ore tank will generate positive pressure, causing dust-containing gas to escape from the ore tank mouth or other loose places. Therefore, the ore tank must be strictly sealed and a bag dust collector should be installed to extract air to maintain negative pressure in the ore tank. . The butterfly valve or resistance balancer of the dust collector above and below the trough is used to adjust the air volume and resistance balance of each branch pipe to ensure the dust collection effect at each point. Each elbow part of the dust collector above and below the trough can be treated with wear-resistant materials and used Wear-resistant ceramics can be applied. A deflector needs to be installed inside the dust collector to prevent dust from washing the bags and extend the service life of the filter bags.
Process characteristics of the upper and lower dust collectors in the tank
According to the characteristics of the process equipment at the next dust removal point of the ore storage tank working at different times, valve switching is set on each dust removal branch pipe and interlocked with the process equipment. (The switching valve can be controlled by an oil cylinder, and the oil supply system can be integrated into the original door opening and closing oil supply system.) That is, when the process equipment is working, the switching valve is opened, and the suction hood located at the dust point works to suck the dust there. to the dust removal system, otherwise it will be shut down simultaneously. The place where the switching valve is installed is equipped with an inspection operation position and local valve switching electrical equipment. This can reduce the total induced air volume and reduce equipment investment and operating costs.
The unloading process of the upper and lower dust collectors in the trough
During the process of unloading materials from the upper ore storage trough to the storage bin, due to the height difference, dust is discharged from the discharge port of the belt conveyor, and the material There is dust spillage in the warehouse. A fixed suction port is set up above the ore storage tank, and the mobile vehicle unloads materials at a fixed point. Unloading begins when the mobile truck reaches a position directly below the suction port (there are three fixed suction ports above each silo to facilitate unloading) Evenly, there is a manual butterfly valve at the connection between the dust suction port and the main pipe. The dust suction port is opened when vacuuming is not needed and closed to reduce the total air intake volume). The dust is removed through the dust hood through the pipeline and the dust collector on the ground to achieve the purpose of dust removal. The induced air volume here is set to 3/.
The dust collector above and below the trough is used to capture non-adhesive, non-fibrous industrial dust and volatile matter, and the captured dust particles can reach .micron. However, when using it to handle gases containing water vapor, condensation problems should be avoided. The dust collector above and below the trough has a very high purification efficiency. Even the efficiency of collecting fine dust can reach above, and its efficiency ratio is high. Therefore, it has become the most sold dust removal equipment on the market.
The dust collector above and below the trough introduces the semi-clean gas that has been dusted by gravity into the bag box. The gas is filtered through the glass fiber felt filter bag to remove the particulate dust in the semi-clean gas and eliminate the dust in the gas. The dust volume is reduced to less than /3, and the dust is collected and utilized through dust collector bag back blowing and dust release. The upper and lower trough dust collector has the characteristics of high dust removal efficiency, good safety performance, convenient control and maintenance, and small footprint.
Use and maintenance of dust collectors above and below the trough
Based on the long-bag low-pressure pulse bag dust collector and combined with the characteristics of blast furnace gas, necessary measures such as pressure resistance and explosion-proof are taken for the dust collector. , and at the same time perform necessary dehydration and deoiling treatment on the origin of pulse cleaning, and the control technology adopts microcomputer control.
After selecting the appropriate dust collector for the upper and lower troughs, there is another key issue that needs attention, which is the sealing of the dust collector in the ore trough. Depending on the shape of the ore tank, feeding method, material properties and operating system, there are many options for sealing the dust collector above and below the tank.
Upper and lower trough dust collector | Mine trough dust collector | Mine trough bag dust collector