Local mine ventilation fans of VMEVO series with built-in explosion-proof motor are designed for ventilation of dead-end coal and ore mine workings, including mine workings with gas and dust hazard by feeding air through a flexible or rigid pipeline with diameter of 0.6 and 1 m. They are also used in tunnel and gallery driving.
Fans of VMEVO series are certified by Federal Technical Regulation and Metrology Agency of Russia and have a permit of Federal Service for Ecological, Technological and Nuclear Supervision of the Russian Federation for use in coal mines, including mines with gas and dust hazard.
Skids
Straightener
Electric motor
Working wheel
Fan housing
Adjustable inlet apparatus
Antistall device
VMEVO fan design
The fan is built on the basis of a new high-pressure aerodynamic scheme, specially designed for optimal operation with ventilation ducts.
The lightweight fan impeller, which increases the reliability and durability of the motor bearings, is made of high-strength carbon steel with increased resistance to mechanical stress
— If it is necessary to increase the air supply to the mine face and in case of extra-long workings, the fan design provides for the possibility of sequential sectioning of two or more units into a single unit
— Special antistall device prevents the occurrence of surging modes and expands the working area of the fan
— Brass protectors are installed in places of possible friction to prevent spark formation
— At the customer's request, the fans are equipped with noise reduction devices.
Nominal impeller diameter, mm;630;670;710;800;1200
Nominal feed, m³/s;7;8;10;14;23
Nominal total pressure, Pa;2500;4000;4000;4700;3200
Maximum total efficiency factor of the fan;0,72;0,72;0,72;0,72;0,72
Corrected sound power level, dBA;118;118;118;118;118
Electric drive power, kW;25;45;55;90;110
Rotation speed, min-1;3000;3000;3000;3000;1500
Motor explosion protection level РВ-3В;РВ-3В;РВ-3В;РВ-3В;РВ-3В
Motor protection level;IP-54;IP-54;IP-54;IP-54;IP-54
Height, mm;975;1095;1150;1250;1750
Width, mm;750;880;1100;1200;1450
Length, mm;1150;1135;1300;1400;2000
Complete unit weight, not exceeding, kg;400;800;800;1200;2300
Feed within the working area, m³/s (min, max);3-9,5;4-11;5-14,5;6-21;...
Pressure within the working area, Pa (min, max);600-3100;600-4400;700-4400;800-5200;...
AERODYNAMIC CHARACTERISTICS
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