FK Series Auxiliary Axial Mine Supply Fan

Product Applications: High-Temperature, Corrosion & Special Environment Customization Metal & Non-Metal Mining Tunnel & Underground

FK Series Auxiliary Axial Mine Supply Fan is engineered for non-coal mine excavation and localized ventilation, offering single- or two-stage (“II” type) impeller options in a compact, direct-coupled motor-impeller design. Lightweight yet robust, it delivers high efficiency and low noise over distances of 160–1,500 m (up to 2,400 m in series), with fan sizes based on impeller diameter (dm) and a wide range of power ratings. Rated for altitudes ≤ 1,000 m, –10 °C to +35 °C, and ≤ 95 % RH without methane, it reliably supports roadway ventilation, working-face air supply, induced-draft in scraper conveyors, and tunnel or underground engineering applications.

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I. Overview

The FK Series Auxiliary Axial Mine Supply Fan (hereinafter referred to as "the fan") features high operating efficiency, low noise, and notable energy savings.

Its design considers the dust and smoke extraction needs, ducted airflow distance, common duct sizes, resistance values, and typical mining conditions for local ventilation. Two structural forms are available: single-stage and dual-stage impellers.

(1) Model Designation

FK Series Auxiliary Axial Mine Supply Fan

F K №X / Y (Ⅱ)

F: Fan
K: Mine application
№ X: Model No. (impeller diameter, dm)
/ Y: Installed power (kW)
(Ⅱ): Dual-stage impeller; omitted for single-stage

(2) Normal Operating Conditions

a) Altitude ≤ 1000 m
b) Operating temperature: –10°C ~ +35°C
c) Relative humidity: ≤ 95% RH (at +25°C)
d) For underground mine use; air must be methane-free

II. Application

Specially designed for non-coal mines in metallurgy, chemical, building materials, nuclear and similar sectors, this fan serves for drift and stope ventilation, scraper drift air extraction, sublevel caving, other local ventilation, and auxiliary ventilation. It is also suitable for tunnel and underground construction requiring ducted ventilation.

III. Features

High operational efficiency
Full range of models and strong adaptability—varied airflow and pressure combinations, airflow distance from 160 m to 1500 m (over 2400 m with series connection)
Compact size, light weight, easy to move
Direct-coupled motor and impeller for high stability, easy installation and maintenance, low system resistance
Low noise

IV. Structure

The fan uses a direct-coupled motor and impeller design. The main body is welded from steel plates, housing both motor and impeller, for compactness and stability. The assembly includes the inlet collector, impeller, rectifier, guide cover, casing, and motor.

1. Structural Diagram of FK Series Ventilation Fan

Figure 1: Schematic Diagram of Single-Stage Impeller Auxiliary Fan

Figure 2: Schematic Diagram of Double-Stage Impeller Auxiliary Fan

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Main Technical Parameters Table of FK Series Ventilation Fans

Model №	Speed r/min	Airflow m³/s	Total Pressure Pa	Rated Power kW	Min. Duct Diameter mm	Max. Efficiency %
3	2840	0.9–1.4	928–575	1.5	300	≥75
4.0	2840	1.4–2.1	853–588	2.2	300	≥75
4.0	2880	1.5–2.4	1263–752	3	350	≥75
4.0	2890	2.1–3.4	1275–981	4	400	≥75
4.0	2910	2.2–3.5	1648–1020	5.5	400	≥75
4.0	2937	2.2–3.5	2923–1811	11	400	≥75
4.5	2910	2.6–4.2	2256–1177	7.5	400	≥75
4.5	2937	3.1–5.0	2093–1295	11	450	≥75
4.5	2937	3.0–5.2	2276–1275	11	450	≥75
4.5	2937	2.8–4.3	3237–1471	11	400	≥75
5	2937	4.2–6.6	1726–1324	11	450	≥75
5.25	2940	4.0–6.3	3776–2648	28	500	≥75
5.5	2910	4.3–5.1	633–475	5.5	550	≥75
6.5	2937	7.1–8.4	884–663	11	650	≥75
7	2937	8.8–10.5	1025–769	15	700	≥75
7.5	2940	10.9–12.9	1177–883	22	750	≥75
8	2940	13.2–15.6	1339–1005	30	800	≥75
5.5	2910	4.8–5.8	1182–515	2×5.5	550	≥75
6.5	2937	7.9–9.5	1651–719	2×11	650	≥75
7	2937	9.9–11.9	1915–834	2×15	700	≥75
7.5	2940	12.2–14.6	2198–957	2×22	750	≥75
8	2940	14.8–17.8	2501–1089	2×30	800	≥75