Фильтровальные рукава для систем с обратной продувкой
произведенные из иглопробивного войлока или стекловолокна
Рукавные фильтры с обратной продувкой крепятся к корпусу газоочистки на закрытой части с одной стороны и к торцевой крышке на открытой части с другой стороны. Во время фильтрации пыленасыщенный газ попадает в рукавный фильтр снизу. По мере продвижения вверх газ выходит за пределы фильтрующей системы, в то время как пыль накапливается на внутренней части рукавного фильтра.
Для удаления осаждённой пыли очищаемая камера в процессе фильтрации отключается. Затем вентилятор обратной продувки создает противоток, в результате чего рукавный фильтр частично сжимается. Для предотвращения полного сжатия опорные кольца сшиты по краю рукавного фильтра через заданные интервалы. После очистки камера возвращается к процессу фильтрации (включается).
High-quality RABH Reverse Air Filters from BWF Envirotec
The design of our Reverse Air Filter Bags differs from conventional filter bags as they work in a different way. Filter bags for Reverse Air Filters must therefore also be mounted differently. A special holder is sewn into the closed upper end of the filter bag to attach the reverse filter. The filter bag is mounted to the baghouse using this bracket. The open lower end of the Reverse Air Filter is connected airtight to the head plate of the baghouse. In filtration mode, the dust-laden gas enters the reverse filter from below. On its way upwards, the gas flows outwards through the fine filter, depositing the dust on the inside of the filter bag. When filtration is running, a filter cake forms on the inside of the filter bag over time. To remove this dust from the surface of the reverse filter and maintain filter efficiency, a backwash is carried out periodically.
Overview of filter bag designs
- sturdy head end with sewn-in holder for attaching the hoses
- bag design for stability: support rings are sewn into the filter bag at defined intervals
- robust materials for demanding environments
- the weight per unit area of the filter material is usually between 350 - 450 g/m²
- large dimensions of the filter bags (diameter up to 300 mm, length up to 12,000 mm)
Depending on the temperature, filter media from the entire product portfolio are used.
RABH Reverse Air Filters - effective cleaning of dust-laden filter media
To clean the filter cake, the chamber of Reverse Air Filters is temporarily disconnected from filtration operation (off-line). Only then does a backwash fan, which is installed outside or directly in the Reverse Air Filter on the clean gas side, create a counterflow that causes the filter bag to partially collapse. To prevent the Reverse Air Filter from collapsing completely, support rings are sewn into the circumference of the Reverse Air Filter at defined intervals. These give the filter bag stability. Backwashing is carried out with clean air from the clean gas side. The counterflow removes the accumulated filter cake from the filter surface. During this cleaning process, the main flow can continue to pass through the filter so that the production process can continue uninterrupted.
In addition to reversing the air flow, many Reverse Filters also use compressed air. Compressed air is blown through special nozzles or valves in short, powerful bursts. These blasts of compressed air can detach dust particles from the filter media. The overlapping of the backwash fan by pulsation improves the efficiency of the cleaning mechanism and thus enables more thorough removal of contamination from the Reverse Air Filter.
When filter bags for Reverse Air Filters are cleaned, the accumulated filter cake breaks up and collapses. The falling dust from above causes a kind of chain reaction that sets off an avalanche of dust (avalanche effect). Particles that adhere to the surface of the filter bag are detached by this dust accumulation and pulled downwards. The reversed air flow combined with the force of gravity causes the particles to be directed into the collection container. The cleaned Reverse Filters return to their original state, ready for a new filtration cycle. The chamber then returns to filtration mode (on-line) and the backwash fan is switched off. The now purified air flow can then be released into the atmosphere. This cleaning process enables almost continuous filtration and maintains the efficiency of the filter system.
Reverse Filter - minimal interruptions with maximum efficiency
- In baghouses with filter bags for Reverse Air Filters, only a small part of the filter elements are usually cleaned at a time, while the others continue to filter the air flow. This sequential cleaning process allows the baghouse to continue operating while optimizing filtration efficiency. Especially in industrial environments where reliable and long-lasting filtration is crucial, our Reverse Air Filters offer an excellent solution.
- The filter bags for Reverse Air Filters from BWF Envirotec impress with their durability. The gentle cleaning mechanism ensures that the filter bags for Reverse Air Filters are only exposed to a low load, resulting in minimal wear. This optimizes resource consumption and improves the overall efficiency of the filtration processes. Regular filter maintenance is an important control measure at BWF Envirotec. These not only enable the timely detection of potential risks and problems, but also significantly minimize downtimes of your baghouse.
- The gentle cleaning method of Reverse Filters is also particularly important when filtering sensitive materials where excessive mechanical impact should be avoided. The materials used in the filter processes are often valuable and reusable products. For this reason, a high filtration efficiency of the Reverse Air Filters is a decisive advantage.
- Reverse Filters impress with their impressive diameter, which leads to a significant increase in their filter area. In view of this characteristic of Reverse Air Filters and the possibility of almost continuous filtration operation, it is practicable to process high exhaust gas volumes on such a filtration system. The consequence is a significant increase in productivity, which in turn leads to lower costs in the long term.
В зависимости от температуры могут использоваться фильтрующие материалы из всего ассортимента продукции.
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Более 50 лет опыта в области промышленной фильтрации и производства фильтровальных рукавов.
2100 наименований стандартной продукции и 17 000 установок с нашими материалами по всему миру, доступных при помощи всего одного щелчка мыши.
Наличие 15 производственных площадок и офисов продаж, а также глобальной сети партнеров подразумевает, что мы всегда говорим на языке своих клиентов.
Промышленные фильтры с нашими рукавами пользуются преимуществом проведения постоянных исследований и разработок: Все доступные пропитки и материалы применяются в Научно-исследовательском центре компании.
Вся продукция «БВФ Энвиротек » производится внутри компании по непрерывной технологической цепочке: Фильтровальный материал - фильтровальный рукав - обслуживание- все от одного источника и компании.
Сборка, ввод в эксплуатацию, техническое обслуживание, ремонт или оптимизация - мы обслуживаем фильтровальные рукава по широкому кругу причин, но с единственной целью: Ваше полное удовлетворение.
Профессиональная поддержка, начиная с первой консультации - наш отдел продаж и технологический отдел всегда на вашей стороне на протяжении всего процесса сотрудничества.
Курсы повышения квалификации «БВФ Энвиротек» предлагают клиентам базовые и практические семинары либо на территории компании, либо с выездом на Вашу площадку.