use:

    The 8-09 type special high-pressure centrifugal fan for the iron furnace is suitable for the blast performance requirements of the iron furnace with a melting rate of 1, 2, 3, 5, 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, unnatural, and do not contain viscous substances. The temperature of the conveying medium should not exceed 80℃, and the dust and hard fine particles contained in the medium should not exceed 150mg/m3.

    Type:

    Fan 8-09 is single suction, and the machine numbers are No. 6.8A, 7.1A, 8D, 8.5D, 9D, a total of 5 machine numbers; Fan 9-12 is single suction, and the machine numbers are No. 6.8A, 7.1A, 7.7A There are 5 machine numbers in total, 8D and 9D.

    Fans of 8-09 and 9-12 can be made into clockwise rotation or counterclockwise rotation. Looking at it 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"; if it rotates in a counterclockwise direction, it is called a counterclockwise rotating fan, which is represented by "counterclockwise".
    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, and bases. For the 8-09 models, the partial assembly structure is adopted, and the other models adopt the overall structure.
    1) Impeller The blade shape is designed according to the new high-efficiency forward fan theory. After the impeller is formed, the static and dynamic balance are corrected, so the operation is stable and reliable.
    2) The casing is welded with ordinary steel plate to form the whole volute casing. The air inlet is made into a convergent streamlined overall structure and fixed with bolts to the front cover plate group.
    3) The air inlet is made into a convergent streamlined overall structure and fixed with bolts to the front cover plate group.
    4) Transmission group is composed of main shaft, bearing box, coupling and so on. The main shaft is made of high-quality steel. For 8-09 type No. 7.1D and No. 8D, use rolling bearing grease lubrication, and for 8-09 type No. 8.5, 9 use rolling bearing lubrication.

    Selection and application of fan performance
    (1) The parameters listed in the performance table of 8-09 and 9-12 fans are calculated by air medium in the state of t=20℃, A atmospheric pressure, pa=101.3×103, gas density ρ=1.2kg/m3 .
    (2) Precautions for purchase Before users purchase a fan, it is best to measure the actual working conditions of the furnace (mainly pressure parameters). Then select according to the melting rate, required air volume and air pressure of the chemical iron furnace, so that the purchased fan meets the actual needs, so as to avoid mismatch.
    Type 9-12 Air volume range: 1700~11411m3/h
            Wind pressure range: 11590~21931Pa
    Type 8-09
            Air volume range: 675~6049m3/min
            Wind pressure range: 10523~20736Pa 

Performance table

model	Machine number №	transmission the way	Rotating speed  (r/min)	Serial number	Full pressure	flow	Required power	Electric motor		Electric motor   (BJ108-60)	Attachment
					(Pa)	(r/min)	(KW)	model	power		bolt GB799-88	nut GB6170-86	washer GB96-85
9-12	6.8	A	2930	1	11590	1700	9.32	Y160S2-2	15		M16×400 (4a)	M16  (4a)	16  (4a)
				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
9-12	7.1	A	2900	1	12347	2074	12.10	Y160M2-2	15		M16×400 (4a)	M16  (4a)	16  (4a)
				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
9-12	7.7	A	2900	1	14543	2349	15.81	Y180M-2	22		M16×400 (4a)	M16  (4a)	16  (4a)
				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	Y255M-2	45