Product details
BKD Two-stage Roots 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.
Product Specifications
| Type |
Suited Blower |
Port Dia
(MM) |
Pressure
(kgf/cm²) |
Speed(rmp) |
Inlet Airflow (m³/min) |
Shaft Power
(kw) |
Cooling Water(L/min) |
| I |
II |
| BKD-1000 |
BKW5006+BKW5003 |
65(2.5") |
1.0-1.5 |
850-1600 |
1050-1800 |
3.32-8.77 |
10.18-24.26 |
32 |
| BKD-2000 |
BKW6008+BKW6005 |
80(3") |
1.0-1.5 |
850-1500 |
850-1500 |
6.05-14.74 |
16.43-38.89 |
40 |
| BKD-3000 |
BKW7011+BKW7006 |
100(4") |
1.0-1.5 |
850-1500 |
1000-1650 |
13.93-29.31 |
30.21-69.27 |
50 |
| BKD-4000 |
BKW8016+BKW7011 |
150(6") |
1.0-1.5 |
850-1400 |
850-1400 |
20.82-41.57 |
49.28-103.6 |
70 |
| BKD-5000 |
BKW8024+BKW8016 |
200(8") |
1.0-1.5 |
850-1400 |
850-1400 |
31.97-62.99 |
77.31-155.6 |
90 |
| BKD-6000 |
BKW9030+BKW9020 |
250(10") |
1.0-1.5 |
850-1400 |
850-1400 |
55.17-105.9 |
124.3-252 |
120 |
| BKD-7000 |
BKW10034+BKW10027 |
300(12") |
1.0-1.5 |
850-1400 |
850-1400 |
80.6-150.88 |
175.2-383.1 |
160 |
Outline Dimension
| BK Outline Dimension Sheet |
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Unit:mm |
Type |
Port Dia |
Motor power |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
0 |
n |
Q×h |
| BKD-1000 |
65(2.5") |
11~30 |
1450 |
1500 |
340 |
450 |
200 |
145 |
180 |
/ |
1000 |
25 |
/ |
1050 |
1100 |
1050 |
805 |
4 |
M16×300 |
| BKD-2000 |
80(3") |
15~45 |
1830 |
1880 |
418 |
530 |
228 |
180 |
200 |
/ |
1050 |
25 |
/ |
1160 |
1210 |
1150 |
950 |
4 |
M16×300 |
| BKD-3000 |
100(4") |
30~45 |
1970 |
2020 |
508 |
600 |
280 |
190 |
280 |
600 |
1200 |
25 |
/ |
1350 |
1400 |
1250 |
1050 |
6 |
M16×400 |
| 55~75 |
650 |
1300 |
25 |
1400 |
1450 |
1350 |
| BKD-4000 |
150(6") |
55~90 |
2050 |
2200 |
508 |
840 |
275 |
200 |
295 |
720 |
1440 |
25 |
825 |
1650 |
1700 |
1480 |
1240 |
8 |
M16×400 |
| 110 |
770 |
1540 |
25 |
860 |
1720 |
1770 |
1560 |
| BKD-5000 |
200(8") |
75~200 |
2150 |
2200 |
570 |
1140 |
295 |
300 |
280 |
875 |
1750 |
25 |
905 |
1810 |
1860 |
1800 |
1370 |
8 |
M16×400 |
| BKD-6000 |
250(10") |
132~200 |
2350 |
2800 |
620 |
1260 |
355 |
335 |
310 |
1020 |
2040 |
25 |
975 |
1950 |
2000 |
2100 |
1500 |
8 |
M16×400 |
| 220~280(6kv) |
1265 |
2650 |
25 |
1040 |
2080 |
2130 |
2580 |
| BKD-7000 |
300(12") |
160~200 |
3120 |
2960 |
1000 |
1480 |
465 |
330 |
330 |
1205 |
2410 |
25 |
1150 |
2300 |
2350 |
2460 |
1800 |
8 |
M16×400 |
| 220~250(6kv) |
1375 |
2750 |
25 |
2800 |
| 280~400(6kv) |
1435 |
2870 |
25 |
2920 |
| Remark: Size A is for reference,but it will not exceed size B. |
Product Application
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 |
|
|
Main Product
Company Brief
B-Tohin Machine(Jiangsu)Co;Ltd.,a joint venture,was established in 1994 and located in Yixing Environmental Protection Science and Technology Industrial Park,National High Tech Development Zone,China.It is mainly engaged in the production and sales of 3-robe roots blowers,rotary blowers,screw blowers,air suspension centrifugal blower,magnetic centrifugal blower,gear speed single-stage high-speed centrifugal blower,multi-stage centrifugal blower,fiberglass blowers,stainless steel blowers,vacuum pumps,water pumps and other products.The products are widely used in environmental protection water treatment,building materials cement,chemical industry,electric power petroleum,steel,metallurgy,mining,printing and dyeing, grain transportation ,new energy and new materials and other industries.The products are sold all over the country,and exported to many countries and regions.At present,the company has established an annual production and sales scale of over 30000 units(sets) of various type of blowers and pumps.
The company has successfully passed the certification of ISO9001 quality management system certification,ISO 14001 environmental management system certification,ISO 45001 occupation health and safety management system certification and ISO50001 energy management system certification.The company also has been certified as "High &New-tech Enterprises of Jiangsu Province" for many years.B-Tohin Tech R&D Center has a team of professor level senior engineers,doctoral and master's students ,and a group of undergraduate students for scientific and technological innovation.It has established the"Jiangsu Province Energy saving Aerodynamic Equipment Engineering Technology Research Center "and "Air Suspension Bearing Research and production Center" .At the same time,it has also obtained the national standard GB/T2.79.22-2011"Product After sales Service Evaluation System"five-star certification,"JiangSu Province Specialized,Refine,Unique and New Small and Medium sized Enterprises",Mayor's Quality Management Excellence Award","Carbon Management System Certificate","AA level Integration Management System Evaluation Certificate",and"Enterprise in Compliance with Environmental Protection Equipment Manufacturing Industry Standard."
As a member unit of the National Blower Standardization Technical Committee,participating in the formulation and revision of multiple wind turbine industry standards,and serving as the main drafting unit. The main products have also passed CE certification for export to the European Union,as well as multiple international certifications such as GOST and BV.
Our Office
Our Workshop
Customers and us
Exhibition
FAQ
Q1. What's the information should I provide when inquiry?
A: Air capacity
B: Pressure
C: Application
D: Use environment(Temperature, atmospheric pressure)
E: Do you need motor?
Or other specials you give us will be more appreciated.
Q2. What is your warranty?
Our warranty is 12 months after received the roots blower. During the warranty period, replace the damaged parts for free of charge. Out warranty period, to provide timely, high-quality technical services and price concessions spare parts to ensure continuous safe and high-quality equipment operation.
Q3. How long is the service life of roots blower?
In normal use environment
A- Service life of blower is more than 10 years.
B- Service life of Impeller is more than 60, 000 hours.
C- Service life of bearing is more than 50, 000 hours.
D- Service life of gear is more than 60, 000 hours.
Q4. What is your terms of packing?
A: Generally, we pack our goods in Fumigation Free Plywood Case. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. How does your factory control product quality?
We have quality inspection department. Before sending out product, we check each product. If there is quality problem, we will produce new one.
Q6. What are your terms of payment?
TT 30% as the advance payment and TT 70% after inspection before shipping.
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