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When the air path of the bag filter is slightly smaller, the main duct has been built in the factory. This place only needs to be assembled. Control of the air passage (connected to the front valve cylinder) should be performed on-site through blanking, fastening and other facilities. Require all pipes to be clean and tidy without other debris. All knowledge should be filled with a sealing material and hermetically sealed after the pressure test.
Bag filter facilities Bag filters and filter bags are safe and careful in all equipment. Therefore, the filter bag must not collide with sharp and hard objects, and must not be scratched in equipment and facilities. Even small traces can greatly shorten the life of the filter bag.
The bag filter bag of the bag type dust collector is to put the dust-removing plastic bag into the bag cavity from the face plate hole of the box body, pinch the steel ring at the upper part of the bag mouth into a concave shape, and put it into the face plate hole of the box Then, restore the steel reed ring to press it tightly on the faceplate hole, and gently push it into the bag cage from the mouth of the bag until the protective cover on the upper part of the bag cage really presses on the faceplate hole of the box and stops suddenly. In order to prevent the filter bag from being stepped on, it is necessary to install a dust removing bone for each filter bag. Filter bag, dust bag cage and perforated plate accessories.
After the box, bag room, air inlet and air outlet, ash hopper and other equipment of the bag dust collector are installed, all direct positions should be tightly sealed. For welding and sealing, hermetic welding shall be performed. For fasteners connected to fasteners, add washers and tighten all fasteners. Bag dust collectors use isoprene rubber or epoxy to prevent parts from leaking. The seal quality of the dust collector is an important factor affecting normal operation and penetration life. The air box pulse bag filter requires an air removal rate of 3%.
Reasons for resistance of bag filter equipment:
1. Obstacles are often encountered in the construction of bag dust collectors. Different types of vacuum cleaners have different stumbling blocks. As for the low-pressure bag type dust collector, there are two types of air inlet methods of the ash hopper and a stepwise air inlet method perpendicular to the filter bag. From time to time, these two approaches will encounter different stumbling blocks. The lower number of air inlets avoids uneven air distribution and vertical collisions between the air and the filter bag. Obstacles appear significantly smaller.
The size of the inlet and outlet, the box and the valve of the bag filter with the same structure are different, so the process of air flow is different, and the stumbling blocks are also different. Different spans between bags will result in different airflow rise speeds and different obstacles. The different filtering areas of the bag filter cause different filtering wind speeds and different operating obstacles. Generally, the lower the air velocity, the smaller the obstacles that occur from time to time.
2. Obstacles occur when cleaning the filter bag with a bag filter. A bag filter is a type of dust removal device that uses a porous bag-shaped filter member to collect dust from the dust-containing gas. Dust-containing gases need to pass through the micropores of the filter bag one by one. Different fractures have different speeds of gas passing through the pores. The stumbling block of the new filter bag is about 50-200 Pa.
3. The dust layer accumulated on the bag filter bag has obstacles. When the dust-containing gas passes through the filter material, the dust is blocked outside the filter material and forms an overlapping dust layer. The dust layer is an important adherent of the dust collector. The stumbling blocks of different dust layers can reach 500-2500 Pa. In this regard, the 369-level dust removal efficiency has an important impact on the turnover stumbling block of the bag dust collector.
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