Introduction to air filters

1.Air filter introduction

Air filtration The dust collector is a device that captures dust from the gas-solid two-phase flow through the action of porous filter materials and purifies the gas. It purifies air with low dust content and sends it indoors to ensure the process requirements of clean rooms and the air cleanliness in general air-conditioned rooms.

Air filter(Air Filter)refers to the air filtering device. Generally used in clean workshops, clean factories, laboratories and clean rooms, or for dust protection of electronic machinery and communication equipment. There is a primary filter, Medium efficiency filter,High efficiency filter and sub-high efficiency and other models. Various models have different standards and performance capabilities.

In pneumatic technology, air filter, pressure reducing valve and lubricator are called the three major pneumatic components. In order to obtain multiple functions, these three air source processing components are often assembled together in order, which is called a pneumatic triplex. Used for air source purification, filtration, pressure reduction and lubrication.

The installation sequence of the three major components is the air filter, pressure reducing valve, Oil mist. The three major parts are indispensable air source devices in most pneumatic systems. They are installed near the gas equipment and are the final guarantee of compressed air quality. In addition to ensuring the quality of the three major parts themselves, their design and installation must also consider saving space. , easy operation and installation, can be combined at will and other factors.

2. Filter classification

（1）chuEffect filter

The filter material of the coarse filter is generally For non-woven fabrics, metal mesh, glass fiber, nylon mesh, etc. Commonly used coarse-efficiency filters include: ZJK-1type automatic winding herringbone air filter, TJ-3 type automatic winding flat air filter, CW type air filter Devices etc. Its structural forms include plate type, folding type, belt type and winding type.

（2) in Effect filter

Commonly used medium-efficiency filters are:M-I、Ⅱ <span style=";font-family:Arial;color:rgb(51,51,51);font-≥0.3μmdust particles

Initial resistance≤220Pa

In the air conditioning purification system Terminal purification equipment that must be used in high-level clean rooms (0.3μmclean rooms)

Super efficient Filter

Remove≥0.1μmdust particles, initial resistance≤280

In the high-level clean room of the terminal filter in the air-conditioning purification system (0.1μmClean room) must use terminal purification equipment.

2.2.2

Filters are divided according to appearance , including flat filter, bag filter, pleated filter, and W type filter.

2.2.3

Filters are divided according to material structure, with or without partition filters and filters with partitions. Among them, filters with partitions have There are paper separator filters and aluminum separator filters.

3. Application

The air filter is to obtain clean air that can meet the standard. Generally Ventilation filters are designed to capture and adsorb dust particles of different sizes in the air to improve air quality. In addition to adsorbing dust, chemical filters can also adsorb odors. They are usually used in biopharmaceuticals, hospitals, and airport terminals. buildings, human settlements and other places. Filters for general ventilation are widely used and are needed in the microelectronics industry, painting industry, food and beverage industry, etc. In other words, the filter is just a means to achieve the goal of cleanliness.

4.Filter production method (gluing method)

The filter is in production, Only high-efficiency filters use potting glue to seal the filter paper and aluminum frame. The glue plays the role of bonding and sealing here, ensuring that solid particles in the air are filtered out to the maximum extent during the operation of the filter.

Filter potting glue is generally polyurethane potting glue. The glue application method There are two types: glue insertion and glue injection.

4.1Inserting glue: Mix well first Pour the glue into the aluminum groove, and then insert the filter paper into the aluminum groove. Glue requirements for glue insertion production: fluidity may be slightly worse.

4.2Glue injection: First put the filter paper into the aluminum tank, then inject glue, wait for the glue to solidify, and then inject the other side. Glue injection production requires better fluidity and slower response than glue insertion products.

<span style= filter The potting glue generally uses polyurethane potting glue, and there are two methods of glue application: glue insertion and glue injection.

4.1Glue insertion: First pour the mixed glue into the aluminum trough, and then insert the filter paper into the aluminum trough. Glue insertion production requires: flow The sex could be a little worse.

4.2Glue injection: First put the filter paper into the aluminum tank, then inject glue, wait for the glue to solidify, and then inject the other side. The glue injection method requires glue: better fluidity and reaction speed than Glue product insertion is slow.