Marine Spark Proof Centrifugal Fan

1.General
　CBGD series (explosion-proof) marine spark proof centrifugal fan (the fans) are explosion proof products which developed from CGDL series marine centrifugal fans. The series are designed and manufactured according to Marine Explosion-Proof Fans, Electrical Apparatus for Explosive Atmospheres and ship regulation of Chinese and international.
　Non-sparking fans are suitable for ventilation of chamber which contains combustible and explosive gas. They are also applicable for other suitable places.
　This series non-sparking fans have been examined and proved up to standard by the Explosion-proof Inspection Authority of the PRC and have got the certificate of inspection. They have also been examined by the Register of Shipping of PRC and have got the certificate.
2.Features
This series non-sparking fans have the feature of high explosion-proof grade, high efficiency, low noise, no overload, well anticorrosive, swing resistance, vibration resistance and shock resistance, stable running and safety, reliability etc.
3.Structure
There are two structural type:
Type I (direct coupling type) and type II (separate cabins type). The construction is non sparking.
Type I is a motor direct coupling one, on the motor shaft the impeller is mounted directly, and the casing is fixed on the flange of the explosion-proof motor. Type II is separate structure, the fan and the motor are separated. It consists of fan driving device, flexible coupling and motor. The driving device consists of body bearing, bearing, shaft, brass rings and glands. It can be oiled and measured the temperature. One side is fixed on the fan and the other side will be mounted on the bulkhead.
The fan may be made into a horizontal, single-stage, single-suction and airtight structure, it also can be made into vertical type.

4.Code of the Model Explanation(The impeller diameter from 20cm to 80cm )

5.drawing of this marine centrifugal fan (type I -20~36 type I -40~80 and type II )

6.Parameters and Outline Size(From CBGD-20 to CBGD-40 for Reference)

CBGD-20-2	400 600 800	500 430 275	550 490 360	2920	50	0.75	1.5	YB801-2-H	YB90S-2-H Y90S-2-H	45	73
CBGD-20-2	600 800 1000	700 560 360	760 650 410	3500	60	0.75	1.5	YB801-2-H	YB90S-2-H Y90S-2-H	45	73
CBGD-25-2	800 1100 1500	710 600 380	760 670 510	2920	50	0.75	1.5	YB801-2-H	YB90S-2-H Y90S-2-H	47	75
CBGD-25-2	1000 1400 1800	1010 830 550	1090 940 730	3500	60	0.75	1.5	YB801-2-H	YB90S-2-H Y90S-2-H	47	75
CBGD-28-2	1000 1600 2200	900 750 460	930 820 610	2920	50	0.75	1.5	YB801-2-H	YB90S-2-H Y90S-2-H	50	78
CBGD-32-2	1600 2200 3000	1230 1080 740	1270 1170 890	2920	50	1.1	1.5	YB802-2-H	YB90S-2-H Y90S-2-H	58	86
CBGD-32-4	900 1200 1500	290 240 180	310 270 220	1460	50	0.55	1.1	YB801-4-H	YB90S-4-H Y90S-4-H	58	86
CBGD-32-4	1000 1400 1800	420 360 260	440 390 320	1750	60	0.55	1.1	YB801-4-H	YB90S-4-H Y90S-4-H	58	86
CBGD-36-2	2400 3300 4200	1560 1370 1070	1630 1490 1260	2920	50	2.2	2.2	YB90L-2-H	YB90L-2-H Y90L-2-H	64	91
CBGD-36-4	1400 1800 2200	370 330 230	390 360 280	1460	50	0.55	1.1	YB801-4-H	YB90S-4-H Y90S-4-H	61	88
CBGD-36-4	1400 1900 2500	570 510 400	590 560 480	1750	60	0.55	1.1	YB801-4-H	YB90S-4-H Y90S-4-H	61	88
CBGD-40-2	4000 5500 7000	1960 1570 1000	2080 1790 1360	2920	50	4	4	YB112M-2-H	YB112M-2-H Y112M-2-H	123	146
CBGD-40-4	2000 2800 3500	480 39-0 260	510 450 350	1460	50	0.75	1.1	YB802-4-H	YB90S-4-H Y90S-4-H	88	115
CBGD-40-4	2400 3200 4200	700 590 380	730 670 510	1750	60	1.1	1.1	YB90S-4-H	YB90S-4-H Y90S-4-H	101	115