FBD series explosion-proof local ventilation fan for Lvliang Coal Mine

Description :

　　Luliang Coal MineFBDSeries mining explosion-proof pressure type counter rotating axial flow local ventilation fan

　　1FBDSeries of Explosion proof Compression Type Axial Flow Local Ventilators for Mining ApplicationsIntroduction

　　The FBD series mining explosion-proof press in counter rotating axial flow local ventilation fan is manufactured completely in accordance with MT755-1997 "Technical Conditions for Counter rotating Local Ventilation Fans". This product is currently an ideal performance coal mine ventilation equipment both domestically and internationally.

　　2、 Overview

　　a、FBDSeries of Explosion proof Compression Type Axial Flow Local Ventilators for Mining ApplicationsProduct Features

　　The FBD series explosion-proof press in counter rotating axial flow local ventilation fan for coal mines has the characteristics of reasonable structure, complete specifications, high efficiency, obvious energy-saving effect, low noise, and long air supply distance. According to different ventilation resistance requirements, it can be used as a whole machine or in stages, thereby reducing ventilation power consumption and saving energy. Within a tunnel length of 2000m, the fan can supply air normally without moving, reducing the labor intensity of workers and saving ventilation time. It is an ideal equipment for local ventilation in coal mines. At the same time, it can also be used in high-pressure ventilation applications such as metallurgy, non-ferrous metals, gold, chemical, shipbuilding, and ceramic industries. Its structural features include mining explosion-proof type, counter rotating, noise reducing, and axial flow type.

　　b、FBDSeries of Explosion proof Compression Type Axial Flow Local Ventilators for Mining ApplicationsMain purpose and scope of application

　　This product is mainly used as a pressure type local ventilation fan in coal mines, suitable for local ventilation in mining faces and various chambers. At the same time, it is also applicable to local ventilation situations in other mines and various tunnel ventilation.

　　c、 Variety and specifications

　　This product is a series of products with complete specifications and varieties. For detailed information, please refer to the technical performance and external installation dimensions table (hereinafter referred to as Table 1) of the FBD series explosion-proof press in counter rotating axial flow local ventilation fan for coal mines.

　　d、FBDSeries mining explosion-proof pressure type counter rotating axial flow local ventilation fanThe composition and representative significance of

　　Taking FBD No.6.3/30 × 2 fan as an example to illustrate

　　e、 Environmental conditions for use

　　This product can be placed flat on the bottom of the tunnel or hung on the wall of the tunnel for use. When used on the base plate, the suction port (collector end) of the fan should not be immersed in water or cement. The gas temperature in the environment where the fan is used is -20~50 ℃, and the altitude should not exceed 1000m. The rated frequency of the power supply used is 50Hz, and the rated voltage is either 380V/660V or 660V/1140V.

　　f、 working conditions

　　This product has a dust content of no more than 200mg/m3 through gas. It should be installed in the intake airflow with a gas concentration of less than 1% underground in coal mines. When the gas concentration exceeds 1%, the power should be immediately cut off.

　　g、 Impact on the environment and energy

　　This product has no pollution to the environment and belongs to high-efficiency energy-saving products.

　　h、 safety

　　This product is designed reasonably and has explosion-proof certification and "MA" safety mark approval certificate. Its supporting motor also has these two certificates, making it a flameproof safety product.

　　IIIFBDSeries of Explosion proof Compression Type Axial Flow Local Ventilators for Mining ApplicationsStructural characteristics and working principle

　　a、 Overall structure, working principle, and working characteristics

　　This product has two impellers installed close to each other, driven by two explosion-proof motors to rotate in opposite directions. The airflow enters the first stage impeller from the collector end along the axial direction and is deflected into the second stage main engine. After being accelerated again by the second stage impeller, the airflow direction is reversed and discharged from the diffuser end along the axial direction.

　　b、 Main components, operation and working principle

　　As shown in the figure, this product consists of four main components: collector, first stage host, second stage host, and diffuser. The collector is composed of an arc-shaped collector and a guide cover, and its main function is to reduce the local resistance loss of the airflow, creating good air intake conditions for the first stage main engine. The first stage main engine is composed of the first stage casing, first stage impeller, and first stage motor and other main components. The first stage casing is its load-bearing body, mainly responsible for ensuring the normal operation of the impeller and motor, while also serving as a muffler. The first stage impeller is the core component that generates airflow in the first stage host, and the first stage motor is the power component that rotates the first stage impeller. Its working principle is that the airflow entering from the collector end flows axially into the first stage impeller, and after being accelerated and deflected, it flows into the second stage main engine; The second stage host consists of main components such as the second stage casing, second stage impeller, and second stage motor. The main functions of the second stage casing and motor are the same as those of the first stage. The second stage impeller is the core component that generates airflow for the second stage main engine. Its working principle is that the airflow flowing out of the first stage impeller is deflected and flows into the second stage impeller. After acceleration, it undergoes reverse deflection and flows into the diffuser along the axial direction. The diffuser is composed of a diffuser tube and a guide cover, and its main function is to reduce the local resistance loss at the outlet of the airflow, improve the effective work capacity of the fan, and the airflow is discharged from the fan along the axial direction through it, while also serving as a rear muffler.

　　Tai'an Yucheng Mining Equipment Co., Ltd. mainly produces:FBDSeries mining explosion-proof pressure type counter rotating axial flow local ventilation fanWet dust removal fan Mining equipment such as extraction type counter rotating local ventilation fan, wind water linkage nozzle, balance air door, spray dust reduction device, etc.

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• Lvliang Coal Mine FBD series ventilation fan