8-09 9-12 centrifugal ventilator

8-09 9-12 series high pressure centrifugal fan Application

    8-09, 9-12 type special high-pressure centrifugal fans for iron furnaces are suitable for the blast performance requirements of iron furnaces with melting rates of IL/h, 2L/h, 3L/h, 3L/h, and 7L/h. The fan can also be used as a blast for various melting furnaces and forging furnaces, and is also suitable for conveying air and gases that are non-corrosive, non-self-igniting, and do not contain viscous substances. The temperature of the input medium should not exceed 80℃, and the dust and hard fine particles contained in the medium should not exceed 150mg/m3.

Type

    The 8-09 fan is single suction, and there are five types of machine numbers: No. 6.8A, 7.1D, 8D, 8.5D, and 9D. The 9-12 fans are single suction, and there are five machine numbers No6.8A, 7.1A, 7.7A, 8D, and 9D.

The 8-09 and 9-12 fans can be made into clockwise rotation or counterclockwise rotation. Viewed from one end of the motor, if the impeller rotates in a clockwise direction, it is called a clockwise rotating fan, which is represented by "clockwise", and it rotates in a counterclockwise direction.

    The outlet position of the fan is expressed by the outlet angle of the casing, and the "shun" and "reverse" fans can be made into three angles of 0°, 90° and 180°.

Structure

    Fans 8-09 and 9-12 are composed of impellers, casings, air inlets, transmission units, seals, bases, etc. For the 8-09 models, the partial assembly structure is adopted, and the other models adopt the overall structure.

    ①The impeller blade type eucalyptus new high-efficiency forward fan theory is designed. After the impeller is formed, the static and dynamic balance are corrected, so the operation is stable and reliable.

    ②The casing is welded with ordinary steel plate to form the whole volute casing.

    ③The air inlet is made into a convergent streamlined overall structure, which is fixed with the front cover plate group by bolts.

    ④ The transmission group consists of the main shaft, bearing box, coupling, etc. The main shaft is made of high-quality steel. For 8-09 type No.71D, No.8D uses rolling bearing grease lubrication, and for 8-09 type Nos.8.5 and 9 use rolling bearing grease lubrication.

Utilization of fan

    Operation is permitted only when the fan is in perfectly normal condition.

    It is required to check each part of the fan for normality in case of startup of the fan upon maintenance.

    The fan shall be cleaned regularly and the dust, dirt and other impurities inside conveying pipeline shall be removed at regular interval to prevent rust.

    It is not allowable to repair the fan when it is in operation.

    A throttling device may be used for adjustment in case of excessive flow which not in compliance with operating requirements or smaller flow required in a short time.

    The fan shall be immediately stopped for inspection in case of abnormality during its startup, shutdown or operation.

Performance parameters of the fan

8-09 High-pressure centrifugal fan performance parameter table

No	transfer method	speed R/min	number	Pa	m3/h	kw	Electric motor
							model	kw
6.8	A	2900	1	10523	675	4.62	Y132S2-2	7.5
			2	11026	944	5.82
			3	11347	1215	7.15
			4	11439	1485	8.63	Y160M1-2	11
			5	11341	1754	10.28
			6	11063	2024	11.96	Y160M2-2	15
			7	10634	2295	13.60
7.1	D	2900	1	11472	768	5.53	Y132S1-2	5.5
			2	12021	1075	6.96	Y132S2-2	7.5
			3	12371	1383	8.71	Y160M1-2	11
			4	12471	1690	10.42
			5	12364	1997	12.30	Y160M2-2	15
			6	12061	2304	14.35
			7	11594	2612	16.61	Y160L-2	18.5
			8	11016	2919	18.38
8	D	2930	1	14867	1110	10.36	Y160M1-2	11
			2	15579	1554	13.04	Y160M2-2	15
			3	16033	1998	16.31	Y160L-2	18.5
			4	16163	2442	19.51	Y180M-2	22
			5	16023	2887	23.04	Y220L1-2	30
			6	15632	3331	26.88
			7	15026	3775	31.11	Y200L2-2	37
			8	14277	4219	34.43
8.5	D	2950	1	17013	1341	14.32	Y160M2-2	15
			2	17828	1877	18.02	Y160L-2	18.5
			3	18347	2414	22.54	Y200L1-2	30
			4	18496	2950	26.97
			5	18338	3487	31.85	Y200L2-2	37
			6	17888	4023	37.15	Y225M-2	45
			7	17196	4560	43.00
			8	（16339）	（5096）	（47.59）
9	D	2950	1	19073	1591	19.05	Y180M-2	15
			2	19988	2228	23.98	Y200L1-2	30
			3	20569	2865	30.00
			4	20736	3502	35.90	Y200L2-2	37
			5	20558	4138	42.37	Y225M-2	45
			6	20054	4775	49.44	Y250M-2	55
			7	19278	5412	57.22	Y280S-2	75
			8	18318	6049	63.33

Performance table of 9-12 type high pressure centrifugal fan

6.8	A	2930	1	11590	1700	9.32	Y160M-2	15
			2	11820	2160	11.59
			3	12000	2620	13.57
			4	12140	3080	15.93	Y160L-2	18.5
			5	12120	3540	18.27
			6	11980	4000	20.55	Y180M-2	22
			7	11740	4460	22.60
7.1	A	2900	1	12347	2074	12.10	Y160M2-2	15
			2	12661	2658	15.02
			3	12807	3000	16.43	Y160L-2	18.5
			4	12896	3242	18.02
			5	13024	3826	21.14	Y180M-2	22
			6	12935	4410	24.30	Y200L1-2	30
			7	12739	4990	27.65
7.4	D	2900	1	13416	2349	14.88	Y160M2-2	15
			2	13749	3010	18.47	Y160L-2	18.5
			3	14004	3371	22.16	Y180M-2	22
			4	14142	4332	25.99	Y200L1-2	30
			5	14053	4993	29.89
			6	13838	5654	33.99	Y200L2-2	37
			7	13465	6315	38.07	Y225M-2	45
7.7	A	2930	1	14543	2349	15.81	Y180M-2	22
			2	14887	3010	19.60
			3	15171	3671	23.52	Y200L1-2	30
			4	15319	4332	27.59
			5	15220	4993	31.72	Y200L2-2	37
			6	14985	5654	36.07
			7	14583	6315	40.40	Y225M-2	45
8	D	2950	1	16216	2996	22.97	Y200L1-2	30
			2	16528	3824	28.24
			3	16931	4651	33.98	Y200L2-2	37
			4	17096	5478	39.78	Y225M-2	45
			5	16931	6306	45.52
			6	16729	7133	51.83	Y250M-2	55
			7	（16216）	（7960）	（57.84）
9	D	2970	1	20803	4295	42.24	Y225M-2	45
			2	21202	5481	51.93	Y250M-2	55
			3	21719	6667	62.48	Y280S-2	75
			4	21931	7853	73.15
			5	21719	9039	83.71	Y280M-2	90
			6	（21461）	（10225）	（95.31）
			7	（20808）	（11411）	（106.40）