Draft machine ВМН

ВМН 15 ВМН 17
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Draft machine ВМН – is a kind of centrifugal blowing machines one-sided suction. They are high pressure units. The case of the device is made of corrosion-resistant alloys.

The fan VMN consists of a spiral case with a removable quarter and ten backward curved blades. It is made in two directions of rotation (right and left).

The letters in the abbreviation of the ventilator ВМН are deciphered as a mill stainless fan. The numbers denote the diameter of the impeller and the angle of rotation of the spiral housing. The direction of rotation is also indicated in the designation.

Draft machine ВМН move non-aggressive non-explosive gases with a temperature below 100 ° C. At the same time, the solids content should not exceed 1 g / m³, and the concentration of phosphoric acid, fluoride, nitrophosphate and ammophos pulp concentrations is below 0.5 g / m³.

These fans are designed to complete the technological lines that produce mineral fertilizers. They are operated in a temperate climate with the first category of accommodation. It is not recommended to install the units in places with a high level of vibration (more than 2 mm / s).

Specifications of Draft machine ВМН

Size fan Capacity, m3/s Full pressure, Pa Maximum efficiency, not less, % Rotational speed, rpm Electric motor Weight without electro motor, kg
Size Power, kWt Rotational speed, rpm Voltage, V
ВМН‑15 38 000 7 200 82 1 500 А315S4 160 1 500 380/660 1 940
ВМН‑17 56 000 9 340 82 1 500 5АМ355M4 315 1 500 380/660 2 250
ДАЗО4‑400ХК‑4У1 315 1 500 6 000

The characteristics are given in the mode of maximum efficiency for the moving medium with parameters: Bar=760 mm Hg. art. and t=70°C.

Dimensions and connection sizes of Draft machine ВМН


Diagram of the turns of the housings of the blower fans single inlet.

Dimensions and connection sizes of Draft machine ВМН №15÷17

Size machine ϕ Dimension, mm
h1 L1 L2 L4 D D1 D2 d d2 A a B b
ВMН‑15 0°÷30° 1 500 650 650 420 1 500 830 875 12 18 2 146 735 2 570 939
45°÷105° 1 400 650 650 420
120°÷150° 1 300 650 650 420
165°÷210° 1 200 650 650 420
225°÷255° 1 100 650 650 420
270° 1 100 1 600 650 420
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
0°÷270° 2 180 950 555 822 300 910 390 420 262 700 620 16 20
ВMН‑17 0°÷45° 1 700 750 750 466 1 700 960 1 030 18 18 2 136 709 2 885 1 077
60°÷105° 1 500 750 750 466
120°÷150° 1 500 750 750 466
165°÷180° 1 400 750 750 466
195°÷255° 1 300 750 750 466
270° 1 200 1 800 750 466
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
0°÷270° 2 470 1 076 555 906 350 992 432 466 254,5 700 620 24 20

 

Aerodynamic characteristics of Draft machine ВМН

ВМН-15

ВМН-17

Acoustic characteristics of Draft machine ВМН

Size fan Rotational speed, rpm Measuring area Values of sound power levels Lpi, dB in octave bands f, Hz LpA, dBА
125 250 500 1000 2000 4000 8000
ВМН‑15 1 500 Discharge 112 115 116 114 112 110 106 119
Suction 108 111 112 110 108 106 102 115
Around the hull 105 106 106 104 101 98 93 109
ВМН‑17 1 500 Discharge 116 119 120 118 116 114 110 123
Suction 112 115 116 114 113 111 106 119
Around the hull 109 110 110 108 105 102 98 113

NOTE: Acoustic characteristics are given for conditions: the axial guide unit is fully open, Bar=760 mm Hg. art., the temperature of the moving medium t=70°C.