High Pressure Roots Air Blower, two stage, DN100, roots lobe blower
About BKD
BKD series is a two-stage roots blower. It is composed of two BKW blowers for reaching higher pressure. Good performance is promised by a middle cooling system installed between the first and the second stage, which keep standard temperature of airflow into the second stage blower.
The BKD two-stage blower is composed of two BKW blowers in series,which can exceed the pressure limit of a single blower.The high temperature gas discharged by the primary blower is cooled by a middle-cooler before it enters into the secondary blower so that its temperature will not exceed the specified value,thus ensuring the good operation of the secondary blower.
BKD Series is a dual stage roots blower,which has two BKW blowers in series,and exceeds the upmost pressure comparing with single one, also there is a middle cooling system between the first and the second stage,it ensures the standard temperature of the airflow to the second blower.
Specifications
|
Model
|
BKD-3000
|
|
Air capacity
|
13.93-29.31 m³/min
|
|
Discharge differential pressure
|
100-150KPA
|
|
Rotary speed
|
850-1500rpm
|
|
Cooling water volume
|
50 L/min
|
|
Motor type
|
30-45/55-75KW
380/400/415/440V, 3PHASES, 50/60HZ
|
|
Installation type
|
Standard: vertical type
|
|
N.W. of blower without motor
|
1500kg
|
|
Packing size Approx.
|
2020*1810*2470mm (length*width*height)
|
|
Features
|
1. Water cooling for the bearings at both end-plates lowers the bearing’s operation temperature.
2. Middle cooler equipped for ease temperature rising
|
Product Working Principle
Roots Blower is a cubage blower, and it discharges a fixed amount of air in proportion to its rotation speed.Every rotation ,there is two lobes to finish three times absorbing and discharging air. Compared with two lobes blower, it is of less air pulses,smaller load change ,high strength,lower noise and vibration.
Two parallel shafts have three lobes each, all the lobes keep small clearance with each other and housing inside.Every lobes rotation,a certain air will be absorbed at inlet and transferred from the housing inside surface to blower’s discharge port.
Two shafts will be turned by the timing gears,no any touching between lobes,so it can be turned at high speed without any lubrication inside.It has the following characteristics: Simply configuration; running smoothly;good performance stabilization .It has been widely applied in various industries.
| No. |
Name |
No. |
Name |
No. |
Name |
| 1 |
Mounting Feet |
11 |
Housing |
21 |
Gear Spacer |
| 2 |
Hex Bolts |
12 |
Oil Seal |
22 |
Bearing |
| 3 |
Dust proof Seal |
13 |
Oil Seal |
23 |
Bearing Container |
| 4 |
Drive Impeller |
14 |
Gear End-plate |
24 |
Shim |
| 5 |
Bearing |
15 |
Hex Bolts |
25 |
Plug( with magnetism) |
| 6 |
Driven Impeller |
16 |
Breather |
26 |
Relief Valve |
| 7 |
Dust cover |
17 |
Hex Bolts |
27 |
Grease Nipple |
| 8 |
Bearing |
18 |
Gear Cover |
28 |
Plug |
| 9 |
Drive End-plate |
19 |
Timing Gears |
|
|
| 10 |
Dowel With Screw Inside |
20 |
Key |
|
|
Airflow and cooling system
Assembling drawing of blower package
Standard supply of scope
1. the first stage blower
2. the second stage blower
3. pressure relieve valve
4. check valve
5. inlet silencer(with air filter)
6. outlet silencer
7. public base (with belt cover)
8. rubber flexible joint and shock pad
9. pulley
10. pressure gauge
11. belt
12. bolts and nuts and other connection parts
13. motor
14. middle cooler
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