FBCDZ Explosion-proof withdrawable counter-rotating axial flow fan for coal mine

FBCDZ Explosion-proof withdrawable counter-rotating axial flow ventilator fan

FBCDZ series main ventilator for mining or tunnel is a new type of high-efficiency, energy-saving, low-noise ventilator suitable for use as the main ventilator in coal mines. Combined with the ventilation network parameters of large and medium-sized coal mines, it is jointly designed and manufactured using curved and swept combined orthogonal technology.
The product has been certified by the national level, and it is believed that “this series of fans has the characteristics of high efficiency, low noise, compact structure, reliable performance, and convenient installation; the curved and swept combination orthogonal three-dimensional twisted blade technology used is the first in China;

Structures

1. Current collecto 2. Primary host group 3. Secondary host group 4. Diffusion tube 5. Diffusion tower

Diffusers and diffusion towers are generally lined with mufflers. According to the user’s requirements, it can be equipped with dampers (vertical gates or butterfly valves), special row mufflers, fan testing devices (testing air ducts, horizontal dampers or shutter valves, etc.), automatic walking devices, electronic control devices, online monitoring and control systems and wireless Personnel duty system, etc.

Advantages 1

The impeller stage adopts a counter-rotating type. Compared with ordinary two-stage axial flow fans, it has fewer front, middle and rear guide vanes, reducing the axial size and reducing losses at the same time.

The main ventilator motor is installed in the flow isolation cavity of the main unit and dissipates heat through four ventilation ducts located in front and behind the motor.

Advantages 2

The flow channel is designed according to the principle of optimizing fan efficiency and has a beautiful appearance. The collector line is arc-shaped, and forms a tapered inlet flow channel with the hemispherical fairing, forming a uniform flow field in front of the impeller inlet to reduce flow loss; the diameter of the main unit inner cylinder is consistent with the impeller hub, and the flow channel is smooth No sudden changes; the diffuser adopts a tapered core cylinder, which can reduce aerodynamic noise while recovering dynamic pressure.

Advantages 3: blade

The main fan blades are made of cast aluminum alloy ZL104 and have been heat treated and inspected for flaw detection. The specific strength of aluminum alloy material is 3 times that of ordinary steel, ensuring that the main ventilator will not crack or break during normal operation; the blades adopt orthogonal bending and sweeping combined three-dimensional twisted blade technology, which increases the efficiency by 5%-10% , the noise is reduced by 10-20dB(A).

Technical specifications

No	Rotating (r/min)	Maximum efficiency point air volume Q ( m3/s )	static pressure at maximum efficiency point P ( Pa,LP type)	static pressure at maximum efficiency point P ( Pa,HP type)	High-efficiency area air volume range Q lower limit (m3/s)	High-efficiency area air volume range Q upper limit (m3/s)	High-efficiency zone static pressure range P(LP type) lower limit (Pa)	High-efficiency zone static pressure range P(LP type) upper limit (Pa)	Efficient Zone Static Pressure Range P(HP type) Lower limit (Pa)	Efficient Zone Static Pressure Range P(HP type) upper limit (Pa)	Noise level than A sound level dB(A)
12	1450	27	2496		17	40	954	3264			W38
13	1450	34	2929		22	51	1155	3830			W38
12	980	18	1140	1425	12	27	449	1491	524	1835	W38
13	980	23	1338	1672	15	35	527	1750	615	2154	W38
14	980	29	1552	1940	18	46	612	2029	713	2498	W38
15	980	36	1781	2227	23	53	702	2329	819	2868	W38
16	980	43	2027	2533	27	65	799	2650	931	3263	W38
17	980	52	2288	2860	33	78	902	2992	1052	3684	W38
18	980	61	2565	3206	39	92	1011	2254	1179	4130	W38
19	980	72	2858	3572	46	108	1127	3737	1314	4601	W38
20	980	84	3167	3958	54	126	1248	4141	1455	5098	W38
18	740	46	1463	1828	30	70	577	1913	672	2355	W38
19	740	55	1630	2037	35	82	642	2131	749	2624	W38
20	740	64	1806	2257	41	95	712	2361	830	2907	W38
21	740	74	1991	2488	47	111	785	2603	915	3205	W38
22	740	85	2185	2731	54	127	861	2857	1004	3517	W38
23	740	97	2388	2985	62	145	941	3123	1097	3844	W38
24	740	110	2600	3250	70	165	1025	3400	1195	4186	W38
25	740	124	2821	3526	79	186	1112	3689	1297	4542	<38
26	740	140	3051	3814	89	210	1203	3990	1402	4913	W38
27	740	157	3291	4113	100	235	1297	4303	1512	5298	W38
28	740	175	3539	4424	111	262	1395	4628	1627	5698	W38
24	580	86	1597	1997	55	129	630	2089	734	2572	W38
25	580	97	1733	2166	62	146	683	2266	797	2790	W38
26	580	110	1875	2343	70	164	739	2451	862	3018	W38
27	580	123	2021	2527	78	184	797	2643	929	3255	W38
28	580	137	2174	2717	87	205	857	2843	999	3500	W38
29	580	152	2332	2915	97	228	919	3050	1072	3755	W38
30	580	168	2496	3120	107	253	984	3264	1147	4018	W38
31	580	186	2665	3331	118	279	1051	3485	1225	4290	W38
32	580	204	2840	3549	130	307	1119	3713	1305	4572	W38
33	580	224	3020	3775	143	336	1190	3949	1388	4862	W38
34	580	245	3206	4007	156	368	1264	4192	1473	5161	W38
35	580	267	3397	4246	170	401	1339	4442	1561	5469	W38
36	580	291	3594	4492	185	436	1417	4700	1652	5786	M38
37	580	316	3796	4745	201	474	1497	4964	1745	6112	W38
38	580	342	4004	5005	218	513	1579	5236	1840	6447	W38
39	580	370	4218	5272	235	555	1663	5515	1939	6790	W38
40	580	399	4437	5546	254	599	1749	5802	2039	7143	W38