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Recirculation dust collection unit type PAR-PI

The recirculating dust collection unit PAR-PI is designed for highly effective air purification from all types of dust (including fine solid aerosols) with its concentration in the purified air up to 1 g/m3. It is not recommended for use to capture explosive and flammable dust. If the dust content in the purified air is more than 1 g/m3, it is recommended to install a preliminary air purification stage in front of the unit.

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parpiparpi

Technical requirements and characteristics of a recirculating dust collection unit (PAR-PI)

The name of indicators Meaning
Nominal capacity, m3/h 1000
Cleaning efficiency, not less than %
– without additional filter– with additional filter, up to		 99
99,999
Reserve “free” pressure for connecting the ventilation network, Pa 500
Inner diameter of inlet pipe, mm 160
Maximum compressed air consumption for regeneration, m3/hthtd> 6
Compressed air pressure, MPa (kgf/cm2) 0.5-0.6 (5-6)
Electric motor:
power, kW		 2.2
Dimensions:
length, mm
width, mm
height, mm		 764
634
1742
Weight, kg 181

General structure of the recirculating dust collection unit (PAR-PI)

The unit is equipped with a FEP cartridge filter element and a device for pulsed regeneration with compressed air. Upon request, PAR-PI can be retrofitted with an additional FyaS filter of classes from F6 to N14 to provide additional air purification from fine aerosols or a FyaS-S carbon filter to capture gaseous pollutants. In this case, the filter is installed on the top of the unit, which increases its height by 300 mm. The choice of an additional filter is made depending on the dispersion of the captured aerosols and the requirements for air cleanliness.

The unit consists of the following main parts: a filter housing, a centrifugal fan, a cartridge-type filter element FEP (hereinafter referred to as “cartridge”) and a device for regenerating the cartridge with compressed air. On one side, PAR-PI has a removable door for installing a cartridge. The cartridge is installed in the housing on support corners welded along the perimeter of the housing, and is hermetically pressed against them using sealing rubber and special clamping devices. The door is hermetically attached to the body through sealing rubber using screw connections. A protective air distribution grille is installed at the air outlet of the unit. The unit has a drawer for collecting dust.

The unit is equipped with 4 wheels and a handle with which it can be easily moved around the production facility and installed in a place convenient for servicing technological equipment. The unit can also be manufactured in a stationary version. In this case, instead of wheels, the unit is equipped with special adjustable supports. To control the specified final aerodynamic resistance of the cartridge, the unit uses a differential pressure sensor with a light signal. When the cartridge reaches its final resistance, a light signal is given indicating the need for its regeneration.

For regeneration, the unit must be connected through fitting 5 (d=1”) to a compressed air network with a pressure of 5-6 atm. Compressed air must be cleaned and dried to at least class 10 according to GOST 17433-80. Regeneration must be carried out with the fan turned off using a special regeneration control device included in the delivery set.
During operation, various cantilever-rotary devices, air ducts from local exhausts or another ventilation network can be connected to the unit. The resistance of these devices should not exceed the “free” pressure margin indicated in the table.

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