The main parameters for the performance measurement of coal mine fans are the wind pressure, air volume and power under different working conditions at a certain blade angle.
Changing the angle of the leading vanes can change the wind speed at the fan inlet and thus the pressure generated by the fan.
Several Ways to Realize the Economical Operation of Ventilators
1. Reduce the radial clearance of the fan
(1) Partially replace the casing. In order to prevent the cylinder close to the moving blade from being deformed due to collision and vibration, the casing can be divided into two sections, a ring with a thickness of 30mm is processed, and it is galvanized. Anti-corrosion treatment, use this ring to join the two sections of housing together. The cost of this transformation is small, and the deformation of the casing can be prevented.
(2) For those fans with large radial clearance and small casing deformation, the method of increasing the length of the fan blades can be used to shrink and unload the clearance to improve the volumetric efficiency of the fan.
(3) For those fan casings with large ovality or partial out-of-tolerance, the method of repairing the inner wall of the casing can be used. After adding talcum powder and epoxy resin, evenly stir it into a paste, and then add dibutyl grease and ethylenediamine. Stir evenly, and the inner wall of the casing should be rust-removed before painting. Although this method cannot completely solve the deformation and achieve uniform filling of the gap, this method is simple in operation, economical in construction, and has certain practical value.
Zibo Hengding Fan produces mining fans, main fans, mine fans, mine main fans, local fans, centrifugal fans, general medium, low and high pressure centrifugal boiler fans, dust centrifugal fans, high temperature fans, coal Dust centrifugal fan, general axial flow fan, roof fan, main and auxiliary fan fan for metal mine, local fan for metal mine, explosion-proof axial flow main and auxiliary fan fan for coal mine, local fan for coal mine, BMJ Series of gas pressurized energy-saving centrifugal fans. The original Zibo Fan Factory is located in Nanjiao Town, Zhoucun District, Zibo City, Shandong Province. It is adjacent to Bolai Expressway in the east, Jiqing Expressway in the west, National Road 309 in the south, and Jiaoji Railway in the north, with convenient transportation and developed communication.
