Industrial Filters

Application
The product has the features of high-efficiency, low resistance, high dust holding capacity. It is widely used for all levels of clean rooms. It can be installed as final filter equipment as well as an accessory of all kinds of purified equipments.

Medium-efficiency and Sub-High-efficiency box filters use the complex chemical fiber synthetic fiber and glass fiber filtering materials and are equipped with inside metal supports and high-strength outside frame of galvanizing plate. They have the characteristics of firm structure, low resistance, high air quantity, and long service life, etc. Furthermore, their filter elements can be replaced and their use-costs can be reduced.

Application
Generally, they are used in the medium-efficiency and sub-high-efficiency filtration of the central ventilation systems and extensively used in the cleansing workshops of intelligent mansions as the prefilteration of the high-efficiency filters. They are suitable for the ventilating and air conditioning systems with changed air quantity.

Structure
They are separated and supported with inside metal supports and have high-strength outside frame of galvanizing plate.

Medium-efficiency bag filter is mainly used to filtrate the dust particles with the diameter of 0.5μm and above. It has the advantage of more filtering area, high dust holding capacity, low resistance, and can be washed and used repeatedly, etc.

Applications
Bag filters are extensively used in the ventilation systems of the central air conditionings and the purification of pharmacy industry, hospital, electron industry, and food industry, etc.

Additionally, they can also be used in the front end filtration of the high-efficiency air filters to reduce their loads and prolong their service lives. Bag filters have dust holding capacity and low wind speed because of their big windward area. Therefore, they are regarded as the best medium-efficiency filter structure up to present.

Structure
They use new-type complex nonwovens or imported minute glass fiber and imported synthetic fiber and are covered with reinforcing and molding filter materials. They have bag-shaped moulds and are equipped with all kinds of metal outside frames (galvanizing plate, iron plate, and aluminum alloy, etc.)

Filtering Material
Generally, there are three kinds of filtering materials used, namely, complex nonwovens, synthetic fiber, and glass fiber.

They are manufactured with nonwovens and glass fiber, etc. as the filtering materials. The wedge-shaped folds are used to enlarge the filtering area. They can also be manufactured to be a plate structure clamped with wire netting or supported with an inside metal framework and equipped with a metal outside frame. They have the characteristics of low resistance, long service life, can be washed, economy and durability, etc.

Application
They are generally used in the prefiltration of the central air conditionings and the centralized ventilation systems and the prefiltration of the gas turbines and the air compressors.

Structure
The inside structures of the filter are generally divided into keel framework and frame framework. The he characteristics of the keel framework include hardihood and uniform distribution of filtering materials, but its manufacture take time and energy. The characteristics of the frame framework include convenience in the exchanging of filter materials and time saving for its manufacture, but its strength is slightly poorer than that of the keel framework.

Filter material
Nonwovens, synthetic fiber, (imported) chemical fiber, (imported) glass fiber and nylon meshwork that can be washed can be used as the filtering materials. The most commonly used ones are nonwovens, glass fiber and nylon meshwork. Their efficiencies can be up to coarse efficiency or medium efficiency.